90717012 has 36 divisors (see below), whose sum is σ = 229727680. Its totient is φ = 30184272.

The previous prime is 90716999. The next prime is 90717013. The reversal of 90717012 is 21071709.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90717013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21189 + ... + 25107.

Almost surely, 2^90717012 is an apocalyptic number.

It is an amenable number.

90717012 is an abundant number, since it is smaller than the sum of its proper divisors (139010668).

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

90717012 is a wasteful number, since it uses less digits than its factorization.

90717012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572 (or 4567 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 90717012 is about 9524.5478632846. The cubic root of 90717012 is about 449.3274100329.

The spelling of 90717012 in words is "ninety million, seven hundred seventeen thousand, twelve".