612157223 has 2 divisors, whose sum is σ = 612157224. Its totient is φ = 612157222.

The previous prime is 612157177. The next prime is 612157229. The reversal of 612157223 is 322751216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612157223 - 2⁸ = 612156967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612157229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306078611 + 306078612.

It is an arithmetic number, because the mean of its divisors is an integer number (306078612).

Almost surely, 2^612157223 is an apocalyptic number.

612157223 is a deficient number, since it is larger than the sum of its proper divisors (1).

612157223 is an equidigital number, since it uses as much as digits as its factorization.

612157223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 612157223 is about 24741.8112311932. The cubic root of 612157223 is about 849.0911730271.

The spelling of 612157223 in words is "six hundred twelve million, one hundred fifty-seven thousand, two hundred twenty-three".