664701120676 has 12 divisors (see below), whose sum is σ = 1163491542108. Its totient is φ = 332274965792.

The previous prime is 664701120641. The next prime is 664701120679. The reversal of 664701120676 is 676021107466.

It can be written as a sum of positive squares in 2 ways, for example, as 237730355776 + 426970764900 = 487576^2 + 653430^2 .

It is not an unprimeable number, because it can be changed into a prime (664701120679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18878851 + ... + 18914026.

It is an arithmetic number, because the mean of its divisors is an integer number (96957628509).

Almost surely, 2^664701120676 is an apocalyptic number.

It is an amenable number.

664701120676 is a deficient number, since it is larger than the sum of its proper divisors (498790421432).

664701120676 is a wasteful number, since it uses less digits than its factorization.

664701120676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37797278 (or 37797276 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 664701120676 in words is "six hundred sixty-four billion, seven hundred one million, one hundred twenty thousand, six hundred seventy-six".