631655742 has 16 divisors (see below), whose sum is σ = 1264762512. Its totient is φ = 210310080.

The previous prime is 631655677. The next prime is 631655747. The reversal of 631655742 is 247556136.

It is a self number, because there is not a number n which added to its sum of digits gives 631655742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631655747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54759 + ... + 65282.

It is an arithmetic number, because the mean of its divisors is an integer number (79047657).

Almost surely, 2^631655742 is an apocalyptic number.

631655742 is an abundant number, since it is smaller than the sum of its proper divisors (633106770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631655742 is a wasteful number, since it uses less digits than its factorization.

631655742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120923.

The product of its digits is 151200, while the sum is 39.

The square root of 631655742 is about 25132.7623233102. The cubic root of 631655742 is about 858.0122389460.

The spelling of 631655742 in words is "six hundred thirty-one million, six hundred fifty-five thousand, seven hundred forty-two".