647915413 has 4 divisors (see below), whose sum is σ = 649050688. Its totient is φ = 646780140.

The previous prime is 647915341. The next prime is 647915417. The reversal of 647915413 is 314519746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 647915413 - 2²⁹ = 111044501 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 (647915417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566781 + ... + 567922.

It is an arithmetic number, because the mean of its divisors is an integer number (162262672).

Almost surely, 2^647915413 is an apocalyptic number.

It is an amenable number.

647915413 is a deficient number, since it is larger than the sum of its proper divisors (1135275).

647915413 is a wasteful number, since it uses less digits than its factorization.

647915413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135274.

The product of its digits is 90720, while the sum is 40.

The square root of 647915413 is about 25454.1826229011. The cubic root of 647915413 is about 865.3120875940.

The spelling of 647915413 in words is "six hundred forty-seven million, nine hundred fifteen thousand, four hundred thirteen".