647976314 has 4 divisors (see below), whose sum is σ = 971964474. Its totient is φ = 323988156.

The previous prime is 647976299. The next prime is 647976347. The reversal of 647976314 is 413679746.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 543589225 + 104387089 = 23315^2 + 10217^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161994077 + ... + 161994080.

Almost surely, 2^647976314 is an apocalyptic number.

647976314 is a deficient number, since it is larger than the sum of its proper divisors (323988160).

647976314 is a wasteful number, since it uses less digits than its factorization.

647976314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323988159.

The product of its digits is 762048, while the sum is 47.

The square root of 647976314 is about 25455.3788814859. The cubic root of 647976314 is about 865.3391984994.

The spelling of 647976314 in words is "six hundred forty-seven million, nine hundred seventy-six thousand, three hundred fourteen".