677370666331 has 2 divisors, whose sum is σ = 677370666332. Its totient is φ = 677370666330.

The previous prime is 677370666317. The next prime is 677370666409. The reversal of 677370666331 is 133666073776.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 677370666331 - 2¹¹ = 677370664283 is a prime.

It is a super-2 number, since 2×677370666331² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (677370666631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338685333165 + 338685333166.

It is an arithmetic number, because the mean of its divisors is an integer number (338685333166).

Almost surely, 2^677370666331 is an apocalyptic number.

677370666331 is a deficient number, since it is larger than the sum of its proper divisors (1).

677370666331 is an equidigital number, since it uses as much as digits as its factorization.

677370666331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12002256, while the sum is 55.

The spelling of 677370666331 in words is "six hundred seventy-seven billion, three hundred seventy million, six hundred sixty-six thousand, three hundred thirty-one".