90570623 has 16 divisors (see below), whose sum is σ = 109842432. Its totient is φ = 73548000.

The previous prime is 90570617. The next prime is 90570629. The reversal of 90570623 is 32607509.

It is an interprime number because it is at equal distance from previous prime (90570617) and next prime (90570629).

It is a cyclic number.

It is not a de Polignac number, because 90570623 - 2¹² = 90566527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90570623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90570629) 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, 5783 + ... + 14648.

It is an arithmetic number, because the mean of its divisors is an integer number (6865152).

Almost surely, 2^90570623 is an apocalyptic number.

90570623 is a deficient number, since it is larger than the sum of its proper divisors (19271809).

90570623 is a wasteful number, since it uses less digits than its factorization.

90570623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20486.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 90570623 is about 9516.8599338227. The cubic root of 90570623 is about 449.0855884182.

The spelling of 90570623 in words is "ninety million, five hundred seventy thousand, six hundred twenty-three".