99956686 has 16 divisors (see below), whose sum is σ = 153504000. Its totient is φ = 48794040.

The previous prime is 99956683. The next prime is 99956687. The reversal of 99956686 is 68665999.

It is a happy number.

It is a super-2 number, since 2×99956686² = 19982678152205192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99956686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99956683) 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, 45841 + ... + 47971.

It is an arithmetic number, because the mean of its divisors is an integer number (9594000).

Almost surely, 2^99956686 is an apocalyptic number.

99956686 is a deficient number, since it is larger than the sum of its proper divisors (53547314).

99956686 is a wasteful number, since it uses less digits than its factorization.

99956686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2679.

The product of its digits is 6298560, while the sum is 58.

The square root of 99956686 is about 9997.8340654364. The cubic root of 99956686 is about 464.0918584237.

The spelling of 99956686 in words is "ninety-nine million, nine hundred fifty-six thousand, six hundred eighty-six".