667060715 has 16 divisors (see below), whose sum is σ = 807716448. Its totient is φ = 528842496.

The previous prime is 667060699. The next prime is 667060717. The reversal of 667060715 is 517060766.

It is a cyclic number.

It is not a de Polignac number, because 667060715 - 2⁴ = 667060699 is a prime.

It is a super-2 number, since 2×667060715² = 889939994992622450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667060717) 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, 277559 + ... + 279951.

It is an arithmetic number, because the mean of its divisors is an integer number (50482278).

Almost surely, 2^667060715 is an apocalyptic number.

667060715 is a deficient number, since it is larger than the sum of its proper divisors (140655733).

667060715 is a wasteful number, since it uses less digits than its factorization.

667060715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 667060715 is about 25827.5185606361. The cubic root of 667060715 is about 873.7525472994.

The spelling of 667060715 in words is "six hundred sixty-seven million, sixty thousand, seven hundred fifteen".