631773677 has 2 divisors, whose sum is σ = 631773678. Its totient is φ = 631773676.

The previous prime is 631773641. The next prime is 631773721. The reversal of 631773677 is 776377136.

631773677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496888681 + 134884996 = 22291^2 + 11614^2 .

It is a cyclic number.

It is not a de Polignac number, because 631773677 - 2¹⁸ = 631511533 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 (631773607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315886838 + 315886839.

It is an arithmetic number, because the mean of its divisors is an integer number (315886839).

Almost surely, 2^631773677 is an apocalyptic number.

It is an amenable number.

631773677 is a deficient number, since it is larger than the sum of its proper divisors (1).

631773677 is an equidigital number, since it uses as much as digits as its factorization.

631773677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777924, while the sum is 47.

The square root of 631773677 is about 25135.1084541125. The cubic root of 631773677 is about 858.0656347911.

The spelling of 631773677 in words is "six hundred thirty-one million, seven hundred seventy-three thousand, six hundred seventy-seven".