647951140 has 24 divisors (see below), whose sum is σ = 1365517440. Its totient is φ = 258262368.

The previous prime is 647951131. The next prime is 647951201. The reversal of 647951140 is 41159746.

It is a self number, because there is not a number n which added to its sum of digits gives 647951140.

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, 51580 + ... + 62899.

It is an arithmetic number, because the mean of its divisors is an integer number (56896560).

Almost surely, 2^647951140 is an apocalyptic number.

It is an amenable number.

647951140 is an abundant number, since it is smaller than the sum of its proper divisors (717566300).

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

647951140 is a wasteful number, since it uses less digits than its factorization.

647951140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114771 (or 114769 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 647951140 is about 25454.8844035875. The cubic root of 647951140 is about 865.3279921581.

It can be divided in two parts, 647951 and 140, that added together give a triangular number (648091 = T₁₁₃₈).

The spelling of 647951140 in words is "six hundred forty-seven million, nine hundred fifty-one thousand, one hundred forty".