13649633 has 8 divisors (see below), whose sum is σ = 14503080. Its totient is φ = 12821760.

The previous prime is 13649627. The next prime is 13649651. The reversal of 13649633 is 33694631.

It can be written as a sum of positive squares in 4 ways, for example, as 7661824 + 5987809 = 2768^2 + 2447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13649633 - 2¹² = 13645537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13649593 and 13649602.

It is not an unprimeable number, because it can be changed into a prime (13649033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5288 + ... + 7433.

It is an arithmetic number, because the mean of its divisors is an integer number (1812885).

Almost surely, 2^13649633 is an apocalyptic number.

It is an amenable number.

13649633 is a deficient number, since it is larger than the sum of its proper divisors (853447).

13649633 is a wasteful number, since it uses less digits than its factorization.

13649633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12787.

The product of its digits is 34992, while the sum is 35.

The square root of 13649633 is about 3694.5409728409. The cubic root of 13649633 is about 238.9866591527.

The spelling of 13649633 in words is "thirteen million, six hundred forty-nine thousand, six hundred thirty-three".