90579587 has 12 divisors (see below), whose sum is σ = 111567240. Its totient is φ = 73071936.

The previous prime is 90579581. The next prime is 90579607. The reversal of 90579587 is 78597509.

It is not a de Polignac number, because 90579587 - 2¹⁰ = 90578563 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90579581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53537 + ... + 55202.

It is an arithmetic number, because the mean of its divisors is an integer number (9297270).

Almost surely, 2^90579587 is an apocalyptic number.

90579587 is a deficient number, since it is larger than the sum of its proper divisors (20987653).

90579587 is a wasteful number, since it uses less digits than its factorization.

90579587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108770 (or 108763 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 90579587 is about 9517.3308758286. The cubic root of 90579587 is about 449.1004036356.

The spelling of 90579587 in words is "ninety million, five hundred seventy-nine thousand, five hundred eighty-seven".