612420244 has 6 divisors (see below), whose sum is σ = 1071735434. Its totient is φ = 306210120.

The previous prime is 612420209. The next prime is 612420251. The reversal of 612420244 is 442024216.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 500864400 + 111555844 = 22380^2 + 10562^2 .

It is a super-2 number, since 2×612420244² = 750117110522039072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76552527 + ... + 76552534.

Almost surely, 2^612420244 is an apocalyptic number.

It is an amenable number.

612420244 is a deficient number, since it is larger than the sum of its proper divisors (459315190).

612420244 is a wasteful number, since it uses less digits than its factorization.

612420244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153105065 (or 153105063 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 612420244 is about 24747.1259745450. The cubic root of 612420244 is about 849.2127631586.

The spelling of 612420244 in words is "six hundred twelve million, four hundred twenty thousand, two hundred forty-four".