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12648701 = 13972977
BaseRepresentation
bin110000010000…
…000011111101
3212210121202102
4300100003331
511214224301
61131034445
7212340452
oct60200375
925717672
1012648701
11715a17a
12429ba25
13280b350
141973829
15119cb6b
hexc100fd

12648701 has 4 divisors (see below), whose sum is σ = 13621692. Its totient is φ = 11675712.

The previous prime is 12648683. The next prime is 12648719. The reversal of 12648701 is 10784621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10784621 = 31347891.

It is an interprime number because it is at equal distance from previous prime (12648683) and next prime (12648719).

It can be written as a sum of positive squares in 2 ways, for example, as 6120676 + 6528025 = 2474^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 12648701 - 214 = 12632317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486476 + ... + 486501.

It is an arithmetic number, because the mean of its divisors is an integer number (3405423).

Almost surely, 212648701 is an apocalyptic number.

It is an amenable number.

12648701 is a deficient number, since it is larger than the sum of its proper divisors (972991).

12648701 is an equidigital number, since it uses as much as digits as its factorization.

12648701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972990.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 12648701 is about 3556.5012301418. The cubic root of 12648701 is about 232.9960949077.

The spelling of 12648701 in words is "twelve million, six hundred forty-eight thousand, seven hundred one".

Divisors: 1 13 972977 12648701