631626061 has 8 divisors (see below), whose sum is σ = 712807200. Its totient is φ = 554405040.

The previous prime is 631626053. The next prime is 631626071. The reversal of 631626061 is 160626136.

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

It is a cyclic number.

It is not a de Polignac number, because 631626061 - 2³ = 631626053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631626071) 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, 989691 + ... + 990328.

It is an arithmetic number, because the mean of its divisors is an integer number (89100900).

Almost surely, 2^631626061 is an apocalyptic number.

It is an amenable number.

631626061 is a deficient number, since it is larger than the sum of its proper divisors (81181139).

631626061 is a wasteful number, since it uses less digits than its factorization.

631626061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980059.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 631626061 is about 25132.1718321358. The cubic root of 631626061 is about 857.9987996317.

The spelling of 631626061 in words is "six hundred thirty-one million, six hundred twenty-six thousand, sixty-one".