647916674 has 8 divisors (see below), whose sum is σ = 974629260. Its totient is φ = 323040256.

The previous prime is 647916673. The next prime is 647916713. The reversal of 647916674 is 476619746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 612216049 + 35700625 = 24743^2 + 5975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (647916671) 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, 458159 + ... + 459570.

Almost surely, 2^647916674 is an apocalyptic number.

647916674 is a deficient number, since it is larger than the sum of its proper divisors (326712586).

647916674 is a wasteful number, since it uses less digits than its factorization.

647916674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918084.

The product of its digits is 1524096, while the sum is 50.

The square root of 647916674 is about 25454.2073928850. The cubic root of 647916674 is about 865.3126489625.

The spelling of 647916674 in words is "six hundred forty-seven million, nine hundred sixteen thousand, six hundred seventy-four".