613661051 has 2 divisors, whose sum is σ = 613661052. Its totient is φ = 613661050.

The previous prime is 613661029. The next prime is 613661057. The reversal of 613661051 is 150166316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613661051 - 2⁶ = 613660987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613661057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306830525 + 306830526.

It is an arithmetic number, because the mean of its divisors is an integer number (306830526).

Almost surely, 2^613661051 is an apocalyptic number.

613661051 is a deficient number, since it is larger than the sum of its proper divisors (1).

613661051 is an equidigital number, since it uses as much as digits as its factorization.

613661051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 613661051 is about 24772.1830083665. The cubic root of 613661051 is about 849.7858980940.

The spelling of 613661051 in words is "six hundred thirteen million, six hundred sixty-one thousand, fifty-one".