612117841 has 2 divisors, whose sum is σ = 612117842. Its totient is φ = 612117840.

The previous prime is 612117817. The next prime is 612117917. The reversal of 612117841 is 148711216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608658241 + 3459600 = 24671^2 + 1860^2 .

It is a cyclic number.

It is not a de Polignac number, because 612117841 - 2⁷ = 612117713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (612117241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306058920 + 306058921.

It is an arithmetic number, because the mean of its divisors is an integer number (306058921).

Almost surely, 2^612117841 is an apocalyptic number.

It is an amenable number.

612117841 is a deficient number, since it is larger than the sum of its proper divisors (1).

612117841 is an equidigital number, since it uses as much as digits as its factorization.

612117841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 612117841 is about 24741.0153591157. The cubic root of 612117841 is about 849.0729644011.

The spelling of 612117841 in words is "six hundred twelve million, one hundred seventeen thousand, eight hundred forty-one".