90610172 has 24 divisors (see below), whose sum is σ = 162523200. Its totient is φ = 44182080.

The previous prime is 90610171. The next prime is 90610189. The reversal of 90610172 is 27101609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90610171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64922 + ... + 66302.

It is an arithmetic number, because the mean of its divisors is an integer number (6771800).

Almost surely, 2^90610172 is an apocalyptic number.

It is an amenable number.

90610172 is a deficient number, since it is larger than the sum of its proper divisors (71913028).

90610172 is a wasteful number, since it uses less digits than its factorization.

90610172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 90610172 is about 9518.9375457558. The cubic root of 90610172 is about 449.1509455240.

The spelling of 90610172 in words is "ninety million, six hundred ten thousand, one hundred seventy-two".