647714628 has 72 divisors (see below), whose sum is σ = 1799310240. Its totient is φ = 194828160.

The previous prime is 647714591. The next prime is 647714629. The reversal of 647714628 is 826417746.

647714628 is a `hidden beast` number, since 6 + 4 + 7 + 7 + 14 + 628 = 666.

647714628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (647714629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48283 + ... + 60221.

It is an arithmetic number, because the mean of its divisors is an integer number (24990420).

Almost surely, 2^647714628 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 647714628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (899655120).

647714628 is an abundant number, since it is smaller than the sum of its proper divisors (1151595612).

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

647714628 is a wasteful number, since it uses less digits than its factorization.

647714628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12097 (or 12092 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 647714628 is about 25450.2382700045. The cubic root of 647714628 is about 865.2226933952. Note that the first 3 decimals are identical.

The spelling of 647714628 in words is "six hundred forty-seven million, seven hundred fourteen thousand, six hundred twenty-eight".