90110645 has 16 divisors (see below), whose sum is σ = 113299968. Its totient is φ = 68713920.

The previous prime is 90110617. The next prime is 90110677. The reversal of 90110645 is 54601109.

It is not a de Polignac number, because 90110645 - 2²⁰ = 89062069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6047 + ... + 14723.

It is an arithmetic number, because the mean of its divisors is an integer number (7081248).

Almost surely, 2^90110645 is an apocalyptic number.

It is an amenable number.

90110645 is a deficient number, since it is larger than the sum of its proper divisors (23189323).

90110645 is a wasteful number, since it uses less digits than its factorization.

90110645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8780.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 90110645 is about 9492.6626928381. The cubic root of 90110645 is about 448.3240457562.

The spelling of 90110645 in words is "ninety million, one hundred ten thousand, six hundred forty-five".