90709560 has 48 divisors (see below), whose sum is σ = 294807240. Its totient is φ = 24189120.

The previous prime is 90709559. The next prime is 90709579. The reversal of 90709560 is 6590709.

90709560 is a `hidden beast` number, since 90 + 7 + 0 + 9 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125626 + ... + 126345.

Almost surely, 2^90709560 is an apocalyptic number.

90709560 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90709560 is an abundant number, since it is smaller than the sum of its proper divisors (204097680).

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

90709560 is a wasteful number, since it uses less digits than its factorization.

90709560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251988 (or 251981 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 90709560 is about 9524.1566555785. The cubic root of 90709560 is about 449.3151062783.

The spelling of 90709560 in words is "ninety million, seven hundred nine thousand, five hundred sixty".