660534707 has 16 divisors (see below), whose sum is σ = 771068160. Its totient is φ = 554098272.

The previous prime is 660534689. The next prime is 660534737. The reversal of 660534707 is 707435066.

It is not a de Polignac number, because 660534707 - 2⁸ = 660534451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660534737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162344 + ... + 166362.

It is an arithmetic number, because the mean of its divisors is an integer number (48191760).

Almost surely, 2^660534707 is an apocalyptic number.

660534707 is a deficient number, since it is larger than the sum of its proper divisors (110533453).

660534707 is a wasteful number, since it uses less digits than its factorization.

660534707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 660534707 is about 25700.8697712743. The cubic root of 660534707 is about 870.8938305679.

The spelling of 660534707 in words is "six hundred sixty million, five hundred thirty-four thousand, seven hundred seven".