664042660262 has 32 divisors (see below), whose sum is σ = 1078126773600. Its totient is φ = 305675555328.

The previous prime is 664042660159. The next prime is 664042660273. The reversal of 664042660262 is 262066240466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880718 + ... + 1450430.

It is an arithmetic number, because the mean of its divisors is an integer number (33691461675).

Almost surely, 2^664042660262 is an apocalyptic number.

664042660262 is a deficient number, since it is larger than the sum of its proper divisors (414084113338).

664042660262 is a wasteful number, since it uses less digits than its factorization.

664042660262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570600.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 664042660262 in words is "six hundred sixty-four billion, forty-two million, six hundred sixty thousand, two hundred sixty-two".