647359479 has 16 divisors (see below), whose sum is σ = 1032824800. Its totient is φ = 398374848.

The previous prime is 647359477. The next prime is 647359483. The reversal of 647359479 is 974953746.

It is a happy number.

647359479 is a `hidden beast` number, since 6 + 47 + 3 + 594 + 7 + 9 = 666.

It is not a de Polignac number, because 647359479 - 2¹ = 647359477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647359477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921814 + ... + 922515.

It is an arithmetic number, because the mean of its divisors is an integer number (64551550).

Almost surely, 2^647359479 is an apocalyptic number.

647359479 is a deficient number, since it is larger than the sum of its proper divisors (385465321).

647359479 is a wasteful number, since it uses less digits than its factorization.

647359479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844351 (or 1844345 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 647359479 is about 25443.2599915970. The cubic root of 647359479 is about 865.0645274682.

The spelling of 647359479 in words is "six hundred forty-seven million, three hundred fifty-nine thousand, four hundred seventy-nine".