631474977 has 8 divisors (see below), whose sum is σ = 962247616. Its totient is φ = 360842832.

The previous prime is 631474973. The next prime is 631474997. The reversal of 631474977 is 779474136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631474977 - 2² = 631474973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631474973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15035098 + ... + 15035139.

It is an arithmetic number, because the mean of its divisors is an integer number (120280952).

Almost surely, 2^631474977 is an apocalyptic number.

It is an amenable number.

631474977 is a deficient number, since it is larger than the sum of its proper divisors (330772639).

631474977 is a wasteful number, since it uses less digits than its factorization.

631474977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30070247.

The product of its digits is 889056, while the sum is 48.

The square root of 631474977 is about 25129.1658635936. The cubic root of 631474977 is about 857.9303835040.

The spelling of 631474977 in words is "six hundred thirty-one million, four hundred seventy-four thousand, nine hundred seventy-seven".