651741664 has 48 divisors (see below), whose sum is σ = 1486543968. Its totient is φ = 275484672.

The previous prime is 651741611. The next prime is 651741677. The reversal of 651741664 is 466147156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3577 + ... + 36280.

It is an arithmetic number, because the mean of its divisors is an integer number (30969666).

Almost surely, 2^651741664 is an apocalyptic number.

It is an amenable number.

651741664 is an abundant number, since it is smaller than the sum of its proper divisors (834802304).

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

651741664 is a wasteful number, since it uses less digits than its factorization.

651741664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39947 (or 39939 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 651741664 is about 25529.2315591363. The cubic root of 651741664 is about 867.0121063449.

The spelling of 651741664 in words is "six hundred fifty-one million, seven hundred forty-one thousand, six hundred sixty-four".