63634490 has 8 divisors (see below), whose sum is σ = 114542100. Its totient is φ = 25453792.

The previous prime is 63634489. The next prime is 63634499. The reversal of 63634490 is 9443636.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60855601 + 2778889 = 7801^2 + 1667^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 63634490.

It is not an unprimeable number, because it can be changed into a prime (63634499) 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, 3181715 + ... + 3181734.

Almost surely, 2^63634490 is an apocalyptic number.

63634490 is a deficient number, since it is larger than the sum of its proper divisors (50907610).

63634490 is a wasteful number, since it uses less digits than its factorization.

63634490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363456.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 63634490 is about 7977.1229149362. The cubic root of 63634490 is about 399.2370665900.

The spelling of 63634490 in words is "sixty-three million, six hundred thirty-four thousand, four hundred ninety".