90510641 has 16 divisors (see below), whose sum is σ = 99660288. Its totient is φ = 81691200.

The previous prime is 90510619. The next prime is 90510643. The reversal of 90510641 is 14601509.

It is a de Polignac number, because none of the positive numbers 2^k-90510641 is a prime.

It is a super-2 number, since 2×90510641² = 16384352268461762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90510641.

It is not an unprimeable number, because it can be changed into a prime (90510643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246440 + ... + 246806.

It is an arithmetic number, because the mean of its divisors is an integer number (6228768).

Almost surely, 2^90510641 is an apocalyptic number.

It is an amenable number.

90510641 is a deficient number, since it is larger than the sum of its proper divisors (9149647).

90510641 is a wasteful number, since it uses less digits than its factorization.

90510641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

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

The square root of 90510641 is about 9513.7080573244. The cubic root of 90510641 is about 448.9864282285.

The spelling of 90510641 in words is "ninety million, five hundred ten thousand, six hundred forty-one".