99975654 has 16 divisors (see below), whose sum is σ = 222168240. Its totient is φ = 33325200.

The previous prime is 99975653. The next prime is 99975661. The reversal of 99975654 is 45657999.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1851401 = 99975654 / (9 + 9 + 9 + 7 + 5 + 6 + 5 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 99975654.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99975653) 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, 925647 + ... + 925754.

It is an arithmetic number, because the mean of its divisors is an integer number (13885515).

Almost surely, 2^99975654 is an apocalyptic number.

99975654 is an abundant number, since it is smaller than the sum of its proper divisors (122192586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99975654 is a wasteful number, since it uses less digits than its factorization.

99975654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851412 (or 1851406 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The square root of 99975654 is about 9998.7826259000. The cubic root of 99975654 is about 464.1212122634.

It can be divided in two parts, 9997 and 5654, that added together give a palindrome (15651).

The spelling of 99975654 in words is "ninety-nine million, nine hundred seventy-five thousand, six hundred fifty-four".