90069620 has 24 divisors (see below), whose sum is σ = 193761288. Its totient is φ = 35148800.

The previous prime is 90069607. The next prime is 90069647. The reversal of 90069620 is 2696009.

It can be written as a sum of positive squares in 4 ways, for example, as 8456464 + 81613156 = 2908^2 + 9034^2 .

It is a super-2 number, since 2×90069620² = 16225072893888800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54101 + ... + 55740.

It is an arithmetic number, because the mean of its divisors is an integer number (8073387).

Almost surely, 2^90069620 is an apocalyptic number.

It is an amenable number.

90069620 is an abundant number, since it is smaller than the sum of its proper divisors (103691668).

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

90069620 is a wasteful number, since it uses less digits than its factorization.

90069620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109891 (or 109889 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90069620 is about 9490.5015673567. The cubic root of 90069620 is about 448.2559987240.

The spelling of 90069620 in words is "ninety million, sixty-nine thousand, six hundred twenty".