631255464 has 128 divisors (see below), whose sum is σ = 2019916800. Its totient is φ = 178925760.

The previous prime is 631255433. The next prime is 631255477. The reversal of 631255464 is 464552136.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196479 + ... + 199665.

It is an arithmetic number, because the mean of its divisors is an integer number (15780600).

Almost surely, 2^631255464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631255464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009958400).

631255464 is an abundant number, since it is smaller than the sum of its proper divisors (1388661336).

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

631255464 is a wasteful number, since it uses less digits than its factorization.

631255464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340 (or 3330 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 631255464 is about 25124.7977902311. The cubic root of 631255464 is about 857.8309608795.

It can be divided in two parts, 6312 and 55464, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 631255464 in words is "six hundred thirty-one million, two hundred fifty-five thousand, four hundred sixty-four".