90606290220 has 72 divisors (see below), whose sum is σ = 279344672880. Its totient is φ = 23765581440.

The previous prime is 90606290191. The next prime is 90606290237. The reversal of 90606290220 is 2209260609.

90606290220 is a `hidden beast` number, since 9 + 0 + 6 + 0 + 629 + 0 + 2 + 20 = 666.

It is a super-3 number, since 3×90606290220³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4114990 + ... + 4136949.

Almost surely, 2^90606290220 is an apocalyptic number.

90606290220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90606290220 is an abundant number, since it is smaller than the sum of its proper divisors (188738382660).

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

90606290220 is a wasteful number, since it uses less digits than its factorization.

90606290220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252015 (or 8252010 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 90606290220 in words is "ninety billion, six hundred six million, two hundred ninety thousand, two hundred twenty".