664524342074 has 4 divisors (see below), whose sum is σ = 996786513114. Its totient is φ = 332262171036.

The previous prime is 664524342047. The next prime is 664524342133. The reversal of 664524342074 is 470243425466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 463141497025 + 201382845049 = 680545^2 + 448757^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166131085517 + ... + 166131085520.

Almost surely, 2^664524342074 is an apocalyptic number.

664524342074 is a deficient number, since it is larger than the sum of its proper divisors (332262171040).

664524342074 is a wasteful number, since it uses less digits than its factorization.

664524342074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332262171039.

The product of its (nonzero) digits is 3870720, while the sum is 47.

The spelling of 664524342074 in words is "six hundred sixty-four billion, five hundred twenty-four million, three hundred forty-two thousand, seventy-four".