63910994 has 12 divisors (see below), whose sum is σ = 111518334. Its totient is φ = 27390384.

The previous prime is 63910969. The next prime is 63910999. The reversal of 63910994 is 49901936.

It can be written as a sum of positive squares in only one way, i.e., 49885969 + 14025025 = 7063^2 + 3745^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63910999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325979 + ... + 326174.

Almost surely, 2^63910994 is an apocalyptic number.

63910994 is a deficient number, since it is larger than the sum of its proper divisors (47607340).

63910994 is a wasteful number, since it uses less digits than its factorization.

63910994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652169 (or 652162 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 63910994 is about 7994.4351895553. The cubic root of 63910994 is about 399.8144848069.

The spelling of 63910994 in words is "sixty-three million, nine hundred ten thousand, nine hundred ninety-four".