647424004 has 12 divisors (see below), whose sum is σ = 1134959644. Its totient is φ = 323149824.

The previous prime is 647423977. The next prime is 647424007. The reversal of 647424004 is 400424746.

It can be written as a sum of positive squares in 2 ways, for example, as 301091904 + 346332100 = 17352^2 + 18610^2 .

It is not an unprimeable number, because it can be changed into a prime (647424007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137949 + ... + 142564.

Almost surely, 2^647424004 is an apocalyptic number.

It is an amenable number.

647424004 is a deficient number, since it is larger than the sum of its proper divisors (487535640).

647424004 is a wasteful number, since it uses less digits than its factorization.

647424004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281094 (or 281092 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 31.

The square root of 647424004 is about 25444.5279775436. The cubic root of 647424004 is about 865.0932680346.

The spelling of 647424004 in words is "six hundred forty-seven million, four hundred twenty-four thousand, four".