617977427 has 2 divisors, whose sum is σ = 617977428. Its totient is φ = 617977426.

The previous prime is 617977417. The next prime is 617977429. The reversal of 617977427 is 724779716.

617977427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 617977427 - 2⁴ = 617977411 is a prime.

It is a super-2 number, since 2×617977427² = 763792200563080658, which contains 22 as substring.

Together with 617977429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (617977429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308988713 + 308988714.

It is an arithmetic number, because the mean of its divisors is an integer number (308988714).

Almost surely, 2^617977427 is an apocalyptic number.

617977427 is a deficient number, since it is larger than the sum of its proper divisors (1).

617977427 is an equidigital number, since it uses as much as digits as its factorization.

617977427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1037232, while the sum is 50.

The square root of 617977427 is about 24859.1517755534. The cubic root of 617977427 is about 851.7736560499.

The spelling of 617977427 in words is "six hundred seventeen million, nine hundred seventy-seven thousand, four hundred twenty-seven".