667896531 has 8 divisors (see below), whose sum is σ = 937398720. Its totient is φ = 421829352.

The previous prime is 667896521. The next prime is 667896533. The reversal of 667896531 is 135698766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 667896531 - 2⁵ = 667896499 is a prime.

It is a super-2 number, since 2×667896531² = 892171552243667922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (667896533) 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, 5858685 + ... + 5858798.

It is an arithmetic number, because the mean of its divisors is an integer number (117174840).

Almost surely, 2^667896531 is an apocalyptic number.

667896531 is a deficient number, since it is larger than the sum of its proper divisors (269502189).

667896531 is a wasteful number, since it uses less digits than its factorization.

667896531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11717505.

The product of its digits is 1632960, while the sum is 51.

The square root of 667896531 is about 25843.6942212215. The cubic root of 667896531 is about 874.1173274653.

The spelling of 667896531 in words is "six hundred sixty-seven million, eight hundred ninety-six thousand, five hundred thirty-one".