336641881 has 2 divisors, whose sum is σ = 336641882. Its totient is φ = 336641880.

The previous prime is 336641861. The next prime is 336641887. The reversal of 336641881 is 188146633.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267486025 + 69155856 = 16355^2 + 8316^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-336641881 is a prime.

It is a super-2 number, since 2×336641881² = 226655512086436322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (336641887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168320940 + 168320941.

It is an arithmetic number, because the mean of its divisors is an integer number (168320941).

Almost surely, 2^336641881 is an apocalyptic number.

It is an amenable number.

336641881 is a deficient number, since it is larger than the sum of its proper divisors (1).

336641881 is an equidigital number, since it uses as much as digits as its factorization.

336641881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 336641881 is about 18347.8031655019. The cubic root of 336641881 is about 695.6477448839.

The spelling of 336641881 in words is "three hundred thirty-six million, six hundred forty-one thousand, eight hundred eighty-one".