90521968 has 10 divisors (see below), whose sum is σ = 175386344. Its totient is φ = 45260976.

The previous prime is 90521929. The next prime is 90521983. The reversal of 90521968 is 86912509.

It is a self number, because there is not a number n which added to its sum of digits gives 90521968.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828796 + ... + 2828827.

Almost surely, 2^90521968 is an apocalyptic number.

It is an amenable number.

90521968 is a deficient number, since it is larger than the sum of its proper divisors (84864376).

90521968 is a wasteful number, since it uses less digits than its factorization.

90521968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657631 (or 5657625 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 90521968 is about 9514.3033376070. The cubic root of 90521968 is about 449.0051569919.

The spelling of 90521968 in words is "ninety million, five hundred twenty-one thousand, nine hundred sixty-eight".