647083040 has 24 divisors (see below), whose sum is σ = 1528734060. Its totient is φ = 258833152.

The previous prime is 647083039. The next prime is 647083043. The reversal of 647083040 is 40380746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 629207056 + 17875984 = 25084^2 + 4228^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 647082988 and 647083006.

It is not an unprimeable number, because it can be changed into a prime (647083043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021975 + ... + 2022294.

Almost surely, 2^647083040 is an apocalyptic number.

It is an amenable number.

647083040 is an abundant number, since it is smaller than the sum of its proper divisors (881651020).

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

647083040 is a wasteful number, since it uses less digits than its factorization.

647083040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044284 (or 4044276 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 647083040 is about 25437.8269512158. The cubic root of 647083040 is about 864.9413750683.

The spelling of 647083040 in words is "six hundred forty-seven million, eighty-three thousand, forty".