90886556 has 12 divisors (see below), whose sum is σ = 168407568. Its totient is φ = 42770112.

The previous prime is 90886553. The next prime is 90886583. The reversal of 90886556 is 65568809.

It is a happy number.

It is a super-2 number, since 2×90886556² = 16520732123082272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90886556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90886553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668216 + ... + 668351.

It is an arithmetic number, because the mean of its divisors is an integer number (14033964).

Almost surely, 2^90886556 is an apocalyptic number.

It is an amenable number.

90886556 is a deficient number, since it is larger than the sum of its proper divisors (77521012).

90886556 is a wasteful number, since it uses less digits than its factorization.

90886556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336588 (or 1336586 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The square root of 90886556 is about 9533.4440786108. Note that the first 3 decimals coincide. The cubic root of 90886556 is about 449.6071567420.

The spelling of 90886556 in words is "ninety million, eight hundred eighty-six thousand, five hundred fifty-six".