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1386061 = 1781533
BaseRepresentation
bin101010010011001001101
32121102022121
411102121031
5323323221
645412541
714531665
oct5223115
92542277
101386061
11867406
1256a151
13396b71
142811a5
151c5a41
hex15264d

1386061 has 4 divisors (see below), whose sum is σ = 1467612. Its totient is φ = 1304512.

The previous prime is 1386053. The next prime is 1386079. The reversal of 1386061 is 1606831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1606831 = 4139191.

It can be written as a sum of positive squares in 2 ways, for example, as 1196836 + 189225 = 1094^2 + 435^2 .

It is not a de Polignac number, because 1386061 - 23 = 1386053 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 (1386361) 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, 40750 + ... + 40783.

It is an arithmetic number, because the mean of its divisors is an integer number (366903).

21386061 is an apocalyptic number.

It is an amenable number.

1386061 is a deficient number, since it is larger than the sum of its proper divisors (81551).

1386061 is an equidigital number, since it uses as much as digits as its factorization.

1386061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81550.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1386061 is about 1177.3109190014. The cubic root of 1386061 is about 111.4963836159.

The spelling of 1386061 in words is "one million, three hundred eighty-six thousand, sixty-one".

Divisors: 1 17 81533 1386061