90662818 has 4 divisors (see below), whose sum is σ = 135994230. Its totient is φ = 45331408.

The previous prime is 90662783. The next prime is 90662827. The reversal of 90662818 is 81826609.

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

It can be written as a sum of positive squares in only one way, i.e., 90497169 + 165649 = 9513^2 + 407^2 .

It is a super-2 number, since 2×90662818² = 16439493135402248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665703 + ... + 22665706.

Almost surely, 2^90662818 is an apocalyptic number.

90662818 is a deficient number, since it is larger than the sum of its proper divisors (45331412).

90662818 is a wasteful number, since it uses less digits than its factorization.

90662818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45331411.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 90662818 is about 9521.7024738226. The cubic root of 90662818 is about 449.2379167108.

The spelling of 90662818 in words is "ninety million, six hundred sixty-two thousand, eight hundred eighteen".