63540678 has 16 divisors (see below), whose sum is σ = 128248560. Its totient is φ = 20985696.

The previous prime is 63540647. The next prime is 63540689. The reversal of 63540678 is 87604536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47925 + ... + 49232.

It is an arithmetic number, because the mean of its divisors is an integer number (8015535).

Almost surely, 2^63540678 is an apocalyptic number.

63540678 is an abundant number, since it is smaller than the sum of its proper divisors (64707882).

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

63540678 is a wasteful number, since it uses less digits than its factorization.

63540678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97271.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 63540678 is about 7971.2406813494. The cubic root of 63540678 is about 399.0407807515.

The spelling of 63540678 in words is "sixty-three million, five hundred forty thousand, six hundred seventy-eight".