607919861 has 2 divisors, whose sum is σ = 607919862. Its totient is φ = 607919860.

The previous prime is 607919803. The next prime is 607919867. The reversal of 607919861 is 168919706.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439698961 + 168220900 = 20969^2 + 12970^2 .

It is a cyclic number.

It is not a de Polignac number, because 607919861 - 2¹⁸ = 607657717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (607919867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303959930 + 303959931.

It is an arithmetic number, because the mean of its divisors is an integer number (303959931).

Almost surely, 2^607919861 is an apocalyptic number.

It is an amenable number.

607919861 is a deficient number, since it is larger than the sum of its proper divisors (1).

607919861 is an equidigital number, since it uses as much as digits as its factorization.

607919861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 607919861 is about 24656.0309255160. The cubic root of 607919861 is about 847.1274943091.

The spelling of 607919861 in words is "six hundred seven million, nine hundred nineteen thousand, eight hundred sixty-one".