614649157 has 2 divisors, whose sum is σ = 614649158. Its totient is φ = 614649156.

The previous prime is 614649097. The next prime is 614649173. The reversal of 614649157 is 751946416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467900161 + 146748996 = 21631^2 + 12114^2 .

It is a cyclic number.

It is not a de Polignac number, because 614649157 - 2⁷ = 614649029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (614649187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307324578 + 307324579.

It is an arithmetic number, because the mean of its divisors is an integer number (307324579).

Almost surely, 2^614649157 is an apocalyptic number.

It is an amenable number.

614649157 is a deficient number, since it is larger than the sum of its proper divisors (1).

614649157 is an equidigital number, since it uses as much as digits as its factorization.

614649157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 614649157 is about 24792.1188485373. The cubic root of 614649157 is about 850.2417568386.

The spelling of 614649157 in words is "six hundred fourteen million, six hundred forty-nine thousand, one hundred fifty-seven".