651718064 has 20 divisors (see below), whose sum is σ = 1317604656. Its totient is φ = 311691072.

The previous prime is 651718049. The next prime is 651718079. The reversal of 651718064 is 460817156.

651718064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (651718049) and next prime (651718079).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885119 + ... + 885854.

Almost surely, 2^651718064 is an apocalyptic number.

It is an amenable number.

651718064 is an abundant number, since it is smaller than the sum of its proper divisors (665886592).

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

651718064 is a wasteful number, since it uses less digits than its factorization.

651718064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771004 (or 1770998 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 651718064 is about 25528.7693397077. The cubic root of 651718064 is about 867.0016411898.

The spelling of 651718064 in words is "six hundred fifty-one million, seven hundred eighteen thousand, sixty-four".