90312616 has 8 divisors (see below), whose sum is σ = 169336170. Its totient is φ = 45156304.

The previous prime is 90312611. The next prime is 90312623. The reversal of 90312616 is 61621309.

It can be written as a sum of positive squares in only one way, i.e., 68128516 + 22184100 = 8254^2 + 4710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90312611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5644531 + ... + 5644546.

Almost surely, 2^90312616 is an apocalyptic number.

It is an amenable number.

90312616 is a deficient number, since it is larger than the sum of its proper divisors (79023554).

90312616 is a wasteful number, since it uses less digits than its factorization.

90312616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289083 (or 11289079 counting only the distinct ones).

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

The square root of 90312616 is about 9503.2950075224. The cubic root of 90312616 is about 448.6587486806.

The spelling of 90312616 in words is "ninety million, three hundred twelve thousand, six hundred sixteen".