90213616 has 10 divisors (see below), whose sum is σ = 174788912. Its totient is φ = 45106800.

The previous prime is 90213601. The next prime is 90213661. The reversal of 90213616 is 61631209.

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, 2819160 + ... + 2819191.

Almost surely, 2^90213616 is an apocalyptic number.

It is an amenable number.

90213616 is a deficient number, since it is larger than the sum of its proper divisors (84575296).

90213616 is a wasteful number, since it uses less digits than its factorization.

90213616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5638359 (or 5638353 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 90213616 is about 9498.0848595914. The cubic root of 90213616 is about 448.4947499766.

The spelling of 90213616 in words is "ninety million, two hundred thirteen thousand, six hundred sixteen".