90662691 has 48 divisors (see below), whose sum is σ = 146941440. Its totient is φ = 49533120.

The previous prime is 90662681. The next prime is 90662707. The reversal of 90662691 is 19626609.

It is not a de Polignac number, because 90662691 - 2⁷ = 90662563 is a prime.

It is a super-2 number, since 2×90662691² = 16439447078722962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90662681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 429576 + ... + 429786.

It is an arithmetic number, because the mean of its divisors is an integer number (3061280).

Almost surely, 2^90662691 is an apocalyptic number.

90662691 is a deficient number, since it is larger than the sum of its proper divisors (56278749).

90662691 is a wasteful number, since it uses less digits than its factorization.

90662691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 90662691 is about 9521.6958048448. The cubic root of 90662691 is about 449.2377069474.

The spelling of 90662691 in words is "ninety million, six hundred sixty-two thousand, six hundred ninety-one".