90645712 has 40 divisors (see below), whose sum is σ = 180211680. Its totient is φ = 44154240.

The previous prime is 90645689. The next prime is 90645719. The reversal of 90645712 is 21754609.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90645719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123298 + ... + 124030.

It is an arithmetic number, because the mean of its divisors is an integer number (4505292).

Almost surely, 2^90645712 is an apocalyptic number.

It is an amenable number.

90645712 is a deficient number, since it is larger than the sum of its proper divisors (89565968).

90645712 is a wasteful number, since it uses less digits than its factorization.

90645712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 90645712 is about 9520.8041677161. The cubic root of 90645712 is about 449.2096612939.

The spelling of 90645712 in words is "ninety million, six hundred forty-five thousand, seven hundred twelve".