63704389 has 16 divisors (see below), whose sum is σ = 77424768. Its totient is φ = 51167232.

The previous prime is 63704369. The next prime is 63704393. The reversal of 63704389 is 98340736.

It is a cyclic number.

It is not a de Polignac number, because 63704389 - 2⁷ = 63704261 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 (63704339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29542 + ... + 31624.

It is an arithmetic number, because the mean of its divisors is an integer number (4839048).

Almost surely, 2^63704389 is an apocalyptic number.

It is an amenable number.

63704389 is a deficient number, since it is larger than the sum of its proper divisors (13720379).

63704389 is a wasteful number, since it uses less digits than its factorization.

63704389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 63704389 is about 7981.5029286470. The cubic root of 63704389 is about 399.3831931120.

The spelling of 63704389 in words is "sixty-three million, seven hundred four thousand, three hundred eighty-nine".