63140778 has 12 divisors (see below), whose sum is σ = 136805058. Its totient is φ = 21046920.

The previous prime is 63140761. The next prime is 63140789. The reversal of 63140778 is 87704136.

It can be written as a sum of positive squares in only one way, i.e., 54863649 + 8277129 = 7407^2 + 2877^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1753893 + ... + 1753928.

Almost surely, 2^63140778 is an apocalyptic number.

63140778 is an abundant number, since it is smaller than the sum of its proper divisors (73664280).

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

63140778 is a wasteful number, since it uses less digits than its factorization.

63140778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507829 (or 3507826 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 63140778 is about 7946.1171650058. The cubic root of 63140778 is about 398.2018832187.

The spelling of 63140778 in words is "sixty-three million, one hundred forty thousand, seven hundred seventy-eight".