667272860 has 12 divisors (see below), whose sum is σ = 1401273048. Its totient is φ = 266909136.

The previous prime is 667272833. The next prime is 667272863. The reversal of 667272860 is 68272766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667272863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16681802 + ... + 16681841.

It is an arithmetic number, because the mean of its divisors is an integer number (116772754).

Almost surely, 2^667272860 is an apocalyptic number.

It is an amenable number.

667272860 is an abundant number, since it is smaller than the sum of its proper divisors (734000188).

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

667272860 is a wasteful number, since it uses less digits than its factorization.

667272860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33363652 (or 33363650 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 667272860 is about 25831.6251908392. The cubic root of 667272860 is about 873.8451638500.

The spelling of 667272860 in words is "six hundred sixty-seven million, two hundred seventy-two thousand, eight hundred sixty".