476618081 has 2 divisors, whose sum is σ = 476618082. Its totient is φ = 476618080.

The previous prime is 476618047. The next prime is 476618083. The reversal of 476618081 is 180816674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 427827856 + 48790225 = 20684^2 + 6985^2 .

It is a cyclic number.

It is not a de Polignac number, because 476618081 - 2⁶ = 476618017 is a prime.

It is a super-2 number, since 2×476618081² = 454329590272245122, which contains 22 as substring.

Together with 476618083, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_25186838 and since 476618081 and 25186838 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (476618083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238309040 + 238309041.

It is an arithmetic number, because the mean of its divisors is an integer number (238309041).

Almost surely, 2^476618081 is an apocalyptic number.

It is an amenable number.

476618081 is a deficient number, since it is larger than the sum of its proper divisors (1).

476618081 is an equidigital number, since it uses as much as digits as its factorization.

476618081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 476618081 is about 21831.5844821213. The cubic root of 476618081 is about 781.1303363089.

The spelling of 476618081 in words is "four hundred seventy-six million, six hundred eighteen thousand, eighty-one".