631075620 has 96 divisors (see below), whose sum is σ = 2037466368. Its totient is φ = 142958592.

The previous prime is 631075609. The next prime is 631075631. The reversal of 631075620 is 26570136.

631075620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (631075609) and next prime (631075631).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40812 + ... + 54108.

It is an arithmetic number, because the mean of its divisors is an integer number (21223608).

Almost surely, 2^631075620 is an apocalyptic number.

631075620 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 631075620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018733184).

631075620 is an abundant number, since it is smaller than the sum of its proper divisors (1406390748).

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

631075620 is a wasteful number, since it uses less digits than its factorization.

631075620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13429 (or 13427 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 631075620 is about 25121.2185214014. The cubic root of 631075620 is about 857.7494881038.

The spelling of 631075620 in words is "six hundred thirty-one million, seventy-five thousand, six hundred twenty".