612796813 has 4 divisors (see below), whose sum is σ = 612852928. Its totient is φ = 612740700.

The previous prime is 612796781. The next prime is 612796817. The reversal of 612796813 is 318697216.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 612796813 - 2⁵ = 612796781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612796813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612796817) 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, 5781 + ... + 35482.

It is an arithmetic number, because the mean of its divisors is an integer number (153213232).

Almost surely, 2^612796813 is an apocalyptic number.

It is an amenable number.

612796813 is a deficient number, since it is larger than the sum of its proper divisors (56115).

612796813 is a wasteful number, since it uses less digits than its factorization.

612796813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56114.

The product of its digits is 108864, while the sum is 43.

The square root of 612796813 is about 24754.7331433809. The cubic root of 612796813 is about 849.3867840112.

The spelling of 612796813 in words is "six hundred twelve million, seven hundred ninety-six thousand, eight hundred thirteen".