664982270 has 8 divisors (see below), whose sum is σ = 1196968104. Its totient is φ = 265992904.

The previous prime is 664982243. The next prime is 664982299. The reversal of 664982270 is 72289466.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33249104 + ... + 33249123.

It is an arithmetic number, because the mean of its divisors is an integer number (149621013).

Almost surely, 2^664982270 is an apocalyptic number.

664982270 is a deficient number, since it is larger than the sum of its proper divisors (531985834).

664982270 is a wasteful number, since it uses less digits than its factorization.

664982270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66498234.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 664982270 is about 25787.2501442089. The cubic root of 664982270 is about 872.8441162247.

The spelling of 664982270 in words is "six hundred sixty-four million, nine hundred eighty-two thousand, two hundred seventy".