612773844 has 12 divisors (see below), whose sum is σ = 1429805664. Its totient is φ = 204257944.

The previous prime is 612773813. The next prime is 612773873. The reversal of 612773844 is 448377216.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 612773796 and 612773805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25532232 + ... + 25532255.

It is an arithmetic number, because the mean of its divisors is an integer number (119150472).

Almost surely, 2^612773844 is an apocalyptic number.

It is an amenable number.

612773844 is an abundant number, since it is smaller than the sum of its proper divisors (817031820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612773844 is a wasteful number, since it uses less digits than its factorization.

612773844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51064494 (or 51064492 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 612773844 is about 24754.2692075529. The cubic root of 612773844 is about 849.3761715709.

The spelling of 612773844 in words is "six hundred twelve million, seven hundred seventy-three thousand, eight hundred forty-four".