615677313 has 4 divisors (see below), whose sum is σ = 820903088. Its totient is φ = 410451540.

The previous prime is 615677239. The next prime is 615677341. The reversal of 615677313 is 313776516.

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 not a de Polignac number, because 615677313 - 2⁹ = 615676801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615677353) 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, 102612883 + ... + 102612888.

It is an arithmetic number, because the mean of its divisors is an integer number (205225772).

Almost surely, 2^615677313 is an apocalyptic number.

It is an amenable number.

615677313 is a deficient number, since it is larger than the sum of its proper divisors (205225775).

615677313 is a wasteful number, since it uses less digits than its factorization.

615677313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205225774.

The product of its digits is 79380, while the sum is 39.

The square root of 615677313 is about 24812.8457255511. The cubic root of 615677313 is about 850.7155741248.

The spelling of 615677313 in words is "six hundred fifteen million, six hundred seventy-seven thousand, three hundred thirteen".