90726523 has 4 divisors (see below), whose sum is σ = 91875040. Its totient is φ = 89578008.

The previous prime is 90726521. The next prime is 90726533. The reversal of 90726523 is 32562709.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32562709 = 3319 ⋅9811.

It is a cyclic number.

It is not a de Polignac number, because 90726523 - 2¹ = 90726521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90726521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574140 + ... + 574297.

It is an arithmetic number, because the mean of its divisors is an integer number (22968760).

Almost surely, 2^90726523 is an apocalyptic number.

90726523 is a deficient number, since it is larger than the sum of its proper divisors (1148517).

90726523 is a wasteful number, since it uses less digits than its factorization.

90726523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148516.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 90726523 is about 9525.0471389910. The cubic root of 90726523 is about 449.3431123565.

The spelling of 90726523 in words is "ninety million, seven hundred twenty-six thousand, five hundred twenty-three".