651613097 has 2 divisors, whose sum is σ = 651613098. Its totient is φ = 651613096.

The previous prime is 651613063. The next prime is 651613129. The reversal of 651613097 is 790316156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495463081 + 156150016 = 22259^2 + 12496^2 .

It is a cyclic number.

It is not a de Polignac number, because 651613097 - 2⁶ = 651613033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 651613097.

It is not a weakly prime, because it can be changed into another prime (651613057) 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, 325806548 + 325806549.

It is an arithmetic number, because the mean of its divisors is an integer number (325806549).

Almost surely, 2^651613097 is an apocalyptic number.

It is an amenable number.

651613097 is a deficient number, since it is larger than the sum of its proper divisors (1).

651613097 is an equidigital number, since it uses as much as digits as its factorization.

651613097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 651613097 is about 25526.7133998876. The cubic root of 651613097 is about 866.9550916911.

The spelling of 651613097 in words is "six hundred fifty-one million, six hundred thirteen thousand, ninety-seven".