63897534 has 36 divisors (see below), whose sum is σ = 141540984. Its totient is φ = 20833032.

The previous prime is 63897523. The next prime is 63897539. The reversal of 63897534 is 43579836.

63897534 is a `hidden beast` number, since 638 + 9 + 7 + 5 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 63897534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63897539) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38959 + ... + 40565.

It is an arithmetic number, because the mean of its divisors is an integer number (3931694).

Almost surely, 2^63897534 is an apocalyptic number.

63897534 is an abundant number, since it is smaller than the sum of its proper divisors (77643450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63897534 is a wasteful number, since it uses less digits than its factorization.

63897534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709 (or 1659 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 63897534 is about 7993.5933096449. The cubic root of 63897534 is about 399.7864151407.

The spelling of 63897534 in words is "sixty-three million, eight hundred ninety-seven thousand, five hundred thirty-four".