63231878 has 24 divisors (see below), whose sum is σ = 99093456. Its totient is φ = 30258480.

The previous prime is 63231871. The next prime is 63231901. The reversal of 63231878 is 87813236.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63231871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320876 + ... + 321072.

It is an arithmetic number, because the mean of its divisors is an integer number (4128894).

Almost surely, 2^63231878 is an apocalyptic number.

63231878 is a deficient number, since it is larger than the sum of its proper divisors (35861578).

63231878 is a wasteful number, since it uses less digits than its factorization.

63231878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 397 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 63231878 is about 7951.8474582955. The cubic root of 63231878 is about 398.3933007683.

The spelling of 63231878 in words is "sixty-three million, two hundred thirty-one thousand, eight hundred seventy-eight".