61597873 has 2 divisors, whose sum is σ = 61597874. Its totient is φ = 61597872.

The previous prime is 61597831. The next prime is 61597891. The reversal of 61597873 is 37879516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32524209 + 29073664 = 5703^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 61597873 - 2²⁵ = 28043441 is a prime.

It is not a weakly prime, because it can be changed into another prime (61097873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30798936 + 30798937.

It is an arithmetic number, because the mean of its divisors is an integer number (30798937).

Almost surely, 2^61597873 is an apocalyptic number.

It is an amenable number.

61597873 is a deficient number, since it is larger than the sum of its proper divisors (1).

61597873 is an equidigital number, since it uses as much as digits as its factorization.

61597873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 61597873 is about 7848.4312445227. The cubic root of 61597873 is about 394.9316187775.

The spelling of 61597873 in words is "sixty-one million, five hundred ninety-seven thousand, eight hundred seventy-three".