63698540 has 12 divisors (see below), whose sum is σ = 133766976. Its totient is φ = 25479408.

The previous prime is 63698539. The next prime is 63698549. The reversal of 63698540 is 4589636.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (63698549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592444 + ... + 1592483.

It is an arithmetic number, because the mean of its divisors is an integer number (11147248).

Almost surely, 2^63698540 is an apocalyptic number.

It is an amenable number.

63698540 is an abundant number, since it is smaller than the sum of its proper divisors (70068436).

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

63698540 is a wasteful number, since it uses less digits than its factorization.

63698540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184936 (or 3184934 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 63698540 is about 7981.1365105479. The cubic root of 63698540 is about 399.3709696539.

The spelling of 63698540 in words is "sixty-three million, six hundred ninety-eight thousand, five hundred forty".