90684012 has 18 divisors (see below), whose sum is σ = 211673028. Its totient is φ = 30217008.

The previous prime is 90683993. The next prime is 90684019. The reversal of 90684012 is 21048609.

It is a super-2 number, since 2×90684012² = 16447180064832288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90684019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31614 + ... + 34362.

Almost surely, 2^90684012 is an apocalyptic number.

It is an amenable number.

90684012 is an abundant number, since it is smaller than the sum of its proper divisors (120989016).

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

90684012 is an equidigital number, since it uses as much as digits as its factorization.

90684012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505 (or 2754 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 90684012 is about 9522.8153400137. The cubic root of 90684012 is about 449.2729196915.

The spelling of 90684012 in words is "ninety million, six hundred eighty-four thousand, twelve".