63631390 has 8 divisors (see below), whose sum is σ = 114536520. Its totient is φ = 25452552.

The previous prime is 63631349. The next prime is 63631397. The reversal of 63631390 is 9313636.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63631397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3181560 + ... + 3181579.

It is an arithmetic number, because the mean of its divisors is an integer number (14317065).

Almost surely, 2^63631390 is an apocalyptic number.

63631390 is a deficient number, since it is larger than the sum of its proper divisors (50905130).

63631390 is a wasteful number, since it uses less digits than its factorization.

63631390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363146.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 63631390 is about 7976.9286069264. The cubic root of 63631390 is about 399.2305834444.

The spelling of 63631390 in words is "sixty-three million, six hundred thirty-one thousand, three hundred ninety".