631476720 has 240 divisors, whose sum is σ = 2474097600. Its totient is φ = 144281088.

The previous prime is 631476719. The next prime is 631476731. The reversal of 631476720 is 27674136.

It is a tau number, because it is divible by the number of its divisors (240).

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245682 + ... + 248238.

It is an arithmetic number, because the mean of its divisors is an integer number (10308740).

Almost surely, 2^631476720 is an apocalyptic number.

631476720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 631476720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237048800).

631476720 is an abundant number, since it is smaller than the sum of its proper divisors (1842620880).

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

631476720 is a wasteful number, since it uses less digits than its factorization.

631476720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597 (or 2574 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 631476720 is about 25129.2005443866. The cubic root of 631476720 is about 857.9311728577.

The spelling of 631476720 in words is "six hundred thirty-one million, four hundred seventy-six thousand, seven hundred twenty".