90724603398 has 64 divisors (see below), whose sum is σ = 213212563200. Its totient is φ = 25372575360.

The previous prime is 90724603391. The next prime is 90724603421. The reversal of 90724603398 is 89330642709.

It is a self number, because there is not a number n which added to its sum of digits gives 90724603398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90724603391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8694048 + ... + 8704476.

It is an arithmetic number, because the mean of its divisors is an integer number (3331446300).

Almost surely, 2^90724603398 is an apocalyptic number.

90724603398 is an abundant number, since it is smaller than the sum of its proper divisors (122487959802).

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

90724603398 is a wasteful number, since it uses less digits than its factorization.

90724603398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20597.

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 90724603398 in words is "ninety billion, seven hundred twenty-four million, six hundred three thousand, three hundred ninety-eight".