612715261 has 2 divisors, whose sum is σ = 612715262. Its totient is φ = 612715260.

The previous prime is 612715253. The next prime is 612715273. The reversal of 612715261 is 162517216.

612715261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383768100 + 228947161 = 19590^2 + 15131^2 .

It is a cyclic number.

It is not a de Polignac number, because 612715261 - 2³ = 612715253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612715291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306357630 + 306357631.

It is an arithmetic number, because the mean of its divisors is an integer number (306357631).

Almost surely, 2^612715261 is an apocalyptic number.

It is an amenable number.

612715261 is a deficient number, since it is larger than the sum of its proper divisors (1).

612715261 is an equidigital number, since it uses as much as digits as its factorization.

612715261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 612715261 is about 24753.0858884302. The cubic root of 612715261 is about 849.3491030798.

The spelling of 612715261 in words is "six hundred twelve million, seven hundred fifteen thousand, two hundred sixty-one".