609694873 has 2 divisors, whose sum is σ = 609694874. Its totient is φ = 609694872.

The previous prime is 609694859. The next prime is 609694901. The reversal of 609694873 is 378496906.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 609694864 + 9 = 24692^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 609694873 - 2²⁵ = 576140441 is a prime.

It is a super-2 number, since 2×609694873² = 743455676324972258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 609694873.

It is not a weakly prime, because it can be changed into another prime (609694823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304847436 + 304847437.

It is an arithmetic number, because the mean of its divisors is an integer number (304847437).

Almost surely, 2^609694873 is an apocalyptic number.

It is an amenable number.

609694873 is a deficient number, since it is larger than the sum of its proper divisors (1).

609694873 is an equidigital number, since it uses as much as digits as its factorization.

609694873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 609694873 is about 24692.0001822453. Note that the first 3 decimals coincide. The cubic root of 609694873 is about 847.9511776397.

The spelling of 609694873 in words is "six hundred nine million, six hundred ninety-four thousand, eight hundred seventy-three".