90870712 has 32 divisors (see below), whose sum is σ = 181530720. Its totient is φ = 42496000.

The previous prime is 90870709. The next prime is 90870721. The reversal of 90870712 is 21707809.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 20712 + ... + 24712.

It is an arithmetic number, because the mean of its divisors is an integer number (5672835).

Almost surely, 2^90870712 is an apocalyptic number.

It is an amenable number.

90870712 is a deficient number, since it is larger than the sum of its proper divisors (90660008).

90870712 is a wasteful number, since it uses less digits than its factorization.

90870712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191 (or 4187 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 90870712 is about 9532.6130730246. The cubic root of 90870712 is about 449.5810289695.

The spelling of 90870712 in words is "ninety million, eight hundred seventy thousand, seven hundred twelve".