664701070 has 64 divisors (see below), whose sum is σ = 1353480192. Its totient is φ = 232848000.

The previous prime is 664701067. The next prime is 664701113. The reversal of 664701070 is 70107466.

664701070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1353525 + ... + 1354015.

It is an arithmetic number, because the mean of its divisors is an integer number (21148128).

Almost surely, 2^664701070 is an apocalyptic number.

664701070 is an abundant number, since it is smaller than the sum of its proper divisors (688779122).

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

664701070 is a wasteful number, since it uses less digits than its factorization.

664701070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 664701070 is about 25781.7972608583. The cubic root of 664701070 is about 872.7210661418.

The spelling of 664701070 in words is "six hundred sixty-four million, seven hundred one thousand, seventy".