664100276 has 12 divisors (see below), whose sum is σ = 1328200608. Its totient is φ = 284614392.

The previous prime is 664100263. The next prime is 664100287. The reversal of 664100276 is 672001466.

664100276 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11858906 + ... + 11858961.

It is an arithmetic number, because the mean of its divisors is an integer number (110683384).

Almost surely, 2^664100276 is an apocalyptic number.

It is an amenable number.

664100276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

664100276 is a wasteful number, since it uses less digits than its factorization.

664100276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23717878 (or 23717876 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 664100276 is about 25770.1431117485. The cubic root of 664100276 is about 872.4580488473.

The spelling of 664100276 in words is "six hundred sixty-four million, one hundred thousand, two hundred seventy-six".