102696561 has 12 divisors (see below), whose sum is σ = 161825040. Its totient is φ = 62240280.

The previous prime is 102696553. The next prime is 102696589. The reversal of 102696561 is 165696201.

102696561 is a `hidden beast` number, since 1 + 0 + 2 + 6 + 96 + 561 = 666.

It is not a de Polignac number, because 102696561 - 2³ = 102696553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102696361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 518571 + ... + 518768.

It is an arithmetic number, because the mean of its divisors is an integer number (13485420).

Almost surely, 2^102696561 is an apocalyptic number.

102696561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102696561 is a deficient number, since it is larger than the sum of its proper divisors (59128479).

102696561 is a wasteful number, since it uses less digits than its factorization.

102696561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037356 (or 1037353 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 102696561 is about 10133.9311720576. The cubic root of 102696561 is about 468.2940432445.

The spelling of 102696561 in words is "one hundred two million, six hundred ninety-six thousand, five hundred sixty-one".