90986623635 has 64 divisors (see below), whose sum is σ = 154800990720. Its totient is φ = 45506396160.

The previous prime is 90986623631. The next prime is 90986623667. The reversal of 90986623635 is 53632668909.

It is not a de Polignac number, because 90986623635 - 2² = 90986623631 is a prime.

It is a super-2 number, since 2×90986623635² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (90986623631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11935125 + ... + 11942745.

It is an arithmetic number, because the mean of its divisors is an integer number (2418765480).

Almost surely, 2^90986623635 is an apocalyptic number.

90986623635 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

90986623635 is a deficient number, since it is larger than the sum of its proper divisors (63814367085).

90986623635 is a wasteful number, since it uses less digits than its factorization.

90986623635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8068.

The product of its (nonzero) digits is 12597120, while the sum is 57.

The spelling of 90986623635 in words is "ninety billion, nine hundred eighty-six million, six hundred twenty-three thousand, six hundred thirty-five".