647624376 has 192 divisors, whose sum is σ = 2142835200. Its totient is φ = 180605376.

The previous prime is 647624359. The next prime is 647624381. The reversal of 647624376 is 673426746.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 454401 + ... + 455823.

It is an arithmetic number, because the mean of its divisors is an integer number (11160600).

Almost surely, 2^647624376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647624376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071417600).

647624376 is an abundant number, since it is smaller than the sum of its proper divisors (1495210824).

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

647624376 is a wasteful number, since it uses less digits than its factorization.

647624376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495 (or 1478 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 45.

The square root of 647624376 is about 25448.4651010626. The cubic root of 647624376 is about 865.1825050662.

The spelling of 647624376 in words is "six hundred forty-seven million, six hundred twenty-four thousand, three hundred seventy-six".