63490591 has 8 divisors (see below), whose sum is σ = 65541168. Its totient is φ = 61464000.

The previous prime is 63490579. The next prime is 63490627. The reversal of 63490591 is 19509436.

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 63490591 - 2⁹ = 63490079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63490591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63490391) 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, 540 + ... + 11281.

It is an arithmetic number, because the mean of its divisors is an integer number (8192646).

Almost surely, 2^63490591 is an apocalyptic number.

63490591 is a deficient number, since it is larger than the sum of its proper divisors (2050577).

63490591 is a wasteful number, since it uses less digits than its factorization.

63490591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11993.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 63490591 is about 7968.0983302166. The cubic root of 63490591 is about 398.9359030041.

The spelling of 63490591 in words is "sixty-three million, four hundred ninety thousand, five hundred ninety-one".