90169616 has 10 divisors (see below), whose sum is σ = 174703662. Its totient is φ = 45084800.

The previous prime is 90169603. The next prime is 90169631. The reversal of 90169616 is 61696109.

It can be written as a sum of positive squares in only one way, i.e., 80928016 + 9241600 = 8996^2 + 3040^2 .

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 90169616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2817785 + ... + 2817816.

Almost surely, 2^90169616 is an apocalyptic number.

It is an amenable number.

90169616 is a deficient number, since it is larger than the sum of its proper divisors (84534046).

90169616 is a wasteful number, since it uses less digits than its factorization.

90169616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635609 (or 5635603 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 90169616 is about 9495.7683206784. The cubic root of 90169616 is about 448.4218231502.

The spelling of 90169616 in words is "ninety million, one hundred sixty-nine thousand, six hundred sixteen".