90655656 has 192 divisors, whose sum is σ = 292331520. Its totient is φ = 22913280.

The previous prime is 90655639. The next prime is 90655703. The reversal of 90655656 is 65655609.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 880101 + ... + 880203.

It is an arithmetic number, because the mean of its divisors is an integer number (1522560).

Almost surely, 2^90655656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90655656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146165760).

90655656 is an abundant number, since it is smaller than the sum of its proper divisors (201675864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90655656 is a wasteful number, since it uses less digits than its factorization.

90655656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 90655656 is about 9521.3263781891. The cubic root of 90655656 is about 449.2260870665.

The spelling of 90655656 in words is "ninety million, six hundred fifty-five thousand, six hundred fifty-six".