614657 has 2 divisors, whose sum is σ = 614658. Its totient is φ = 614656.

The previous prime is 614639. The next prime is 614659. The reversal of 614657 is 756416.

It is a Cunningham number, because it is equal to 28⁴+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614656 + 1 = 784^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 614657 - 2¹⁰ = 613633 is a prime.

Together with 614659, 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 (614659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307328 + 307329.

It is an arithmetic number, because the mean of its divisors is an integer number (307329).

614657 is a Friedman number, since it can be written as 6/6+(7*4)^(5-1), using all its digits and the basic arithmetic operations.

2⁶¹⁴⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

614657 is a deficient number, since it is larger than the sum of its proper divisors (1).

614657 is an equidigital number, since it uses as much as digits as its factorization.

614657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 614657 is about 784.0006377548. Note that the first 3 decimals coincide. The cubic root of 614657 is about 85.0245373220.

The spelling of 614657 in words is "six hundred fourteen thousand, six hundred fifty-seven".