631450641 has 8 divisors (see below), whose sum is σ = 853792704. Its totient is φ = 415037840.

The previous prime is 631450613. The next prime is 631450643. The reversal of 631450641 is 146054136.

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 631450641 - 2⁶ = 631450577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631450599 and 631450608.

It is not an unprimeable number, because it can be changed into a prime (631450643) 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, 1482066 + ... + 1482491.

It is an arithmetic number, because the mean of its divisors is an integer number (106724088).

Almost surely, 2^631450641 is an apocalyptic number.

It is an amenable number.

631450641 is a deficient number, since it is larger than the sum of its proper divisors (222342063).

631450641 is a wasteful number, since it uses less digits than its factorization.

631450641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2964631.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 631450641 is about 25128.6816407069. The cubic root of 631450641 is about 857.9193622903.

The spelling of 631450641 in words is "six hundred thirty-one million, four hundred fifty thousand, six hundred forty-one".