670712564 has 6 divisors (see below), whose sum is σ = 1173746994. Its totient is φ = 335356280.

The previous prime is 670712557. The next prime is 670712569. The reversal of 670712564 is 465217076.

It can be written as a sum of positive squares in only one way, i.e., 612067600 + 58644964 = 24740^2 + 7658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670712569) by changing a digit.

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 as a sum of consecutive naturals, namely, 83839067 + ... + 83839074.

It is an arithmetic number, because the mean of its divisors is an integer number (195624499).

Almost surely, 2^670712564 is an apocalyptic number.

It is an amenable number.

670712564 is a deficient number, since it is larger than the sum of its proper divisors (503034430).

670712564 is a wasteful number, since it uses less digits than its factorization.

670712564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167678145 (or 167678143 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 670712564 is about 25898.1189278295. The cubic root of 670712564 is about 875.3441102055.

The spelling of 670712564 in words is "six hundred seventy million, seven hundred twelve thousand, five hundred sixty-four".