90732566 has 4 divisors (see below), whose sum is σ = 136098852. Its totient is φ = 45366282.

The previous prime is 90732557. The next prime is 90732571. The reversal of 90732566 is 66523709.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22683140 + ... + 22683143.

It is an arithmetic number, because the mean of its divisors is an integer number (34024713).

Almost surely, 2^90732566 is an apocalyptic number.

90732566 is a deficient number, since it is larger than the sum of its proper divisors (45366286).

90732566 is a wasteful number, since it uses less digits than its factorization.

90732566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45366285.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 90732566 is about 9525.3643499868. The cubic root of 90732566 is about 449.3530885651.

The spelling of 90732566 in words is "ninety million, seven hundred thirty-two thousand, five hundred sixty-six".