655830679837 has 2 divisors, whose sum is σ = 655830679838. Its totient is φ = 655830679836.

The previous prime is 655830679787. The next prime is 655830679853. The reversal of 655830679837 is 738976038556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497608911396 + 158221768441 = 705414^2 + 397771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655830679837 is a prime.

It is a super-2 number, since 2×655830679837² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655830679877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327915339918 + 327915339919.

It is an arithmetic number, because the mean of its divisors is an integer number (327915339919).

Almost surely, 2^655830679837 is an apocalyptic number.

It is an amenable number.

655830679837 is a deficient number, since it is larger than the sum of its proper divisors (1).

655830679837 is an equidigital number, since it uses as much as digits as its factorization.

655830679837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 228614400, while the sum is 67.

The spelling of 655830679837 in words is "six hundred fifty-five billion, eight hundred thirty million, six hundred seventy-nine thousand, eight hundred thirty-seven".