612819823 has 24 divisors (see below), whose sum is σ = 785448144. Its totient is φ = 472752000.

The previous prime is 612819773. The next prime is 612819877. The reversal of 612819823 is 328918216.

It is not a de Polignac number, because 612819823 - 2²⁵ = 579265391 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 (612810823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48811 + ... + 60067.

It is an arithmetic number, because the mean of its divisors is an integer number (32727006).

Almost surely, 2^612819823 is an apocalyptic number.

612819823 is a deficient number, since it is larger than the sum of its proper divisors (172628321).

612819823 is a wasteful number, since it uses less digits than its factorization.

612819823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11383 (or 11376 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 612819823 is about 24755.1978986232. The cubic root of 612819823 is about 849.3974151290.

The spelling of 612819823 in words is "six hundred twelve million, eight hundred nineteen thousand, eight hundred twenty-three".