631181677 has 16 divisors (see below), whose sum is σ = 730098432. Its totient is φ = 534493440.

The previous prime is 631181657. The next prime is 631181699. The reversal of 631181677 is 776181136.

It is a cyclic number.

It is not a de Polignac number, because 631181677 - 2¹⁵ = 631148909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631181657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200677 + ... + 203797.

It is an arithmetic number, because the mean of its divisors is an integer number (45631152).

Almost surely, 2^631181677 is an apocalyptic number.

It is an amenable number.

631181677 is a deficient number, since it is larger than the sum of its proper divisors (98916755).

631181677 is a wasteful number, since it uses less digits than its factorization.

631181677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3468.

The product of its digits is 42336, while the sum is 40.

The square root of 631181677 is about 25123.3293374903. The cubic root of 631181677 is about 857.7975358279.

The spelling of 631181677 in words is "six hundred thirty-one million, one hundred eighty-one thousand, six hundred seventy-seven".