666532670 has 16 divisors (see below), whose sum is σ = 1206696960. Its totient is φ = 265071264.

The previous prime is 666532649. The next prime is 666532693. The reversal of 666532670 is 76235666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190910 + ... + 194369.

It is an arithmetic number, because the mean of its divisors is an integer number (75418560).

Almost surely, 2^666532670 is an apocalyptic number.

666532670 is a deficient number, since it is larger than the sum of its proper divisors (540164290).

666532670 is a wasteful number, since it uses less digits than its factorization.

666532670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385459.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 666532670 is about 25817.2940100236. The cubic root of 666532670 is about 873.5219323794.

The spelling of 666532670 in words is "six hundred sixty-six million, five hundred thirty-two thousand, six hundred seventy".