90724966 has 4 divisors (see below), whose sum is σ = 136087452. Its totient is φ = 45362482.

The previous prime is 90724957. The next prime is 90724987. The reversal of 90724966 is 66942709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66942709 = 41 ⋅1632749.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22681240 + ... + 22681243.

It is an arithmetic number, because the mean of its divisors is an integer number (34021863).

Almost surely, 2^90724966 is an apocalyptic number.

90724966 is a deficient number, since it is larger than the sum of its proper divisors (45362486).

90724966 is a wasteful number, since it uses less digits than its factorization.

90724966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45362485.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 90724966 is about 9524.9654067613. The cubic root of 90724966 is about 449.3405418799.

The spelling of 90724966 in words is "ninety million, seven hundred twenty-four thousand, nine hundred sixty-six".