63969764 has 12 divisors (see below), whose sum is σ = 113056188. Its totient is φ = 31668000.

The previous prime is 63969761. The next prime is 63969769. The reversal of 63969764 is 46796936.

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 5569600 = 7642^2 + 2360^2 .

It is not an unprimeable number, because it can be changed into a prime (63969761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78767 + ... + 79574.

It is an arithmetic number, because the mean of its divisors is an integer number (9421349).

Almost surely, 2^63969764 is an apocalyptic number.

It is an amenable number.

63969764 is a deficient number, since it is larger than the sum of its proper divisors (49086424).

63969764 is a wasteful number, since it uses less digits than its factorization.

63969764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158446 (or 158444 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 50.

The square root of 63969764 is about 7998.1100267501. The cubic root of 63969764 is about 399.9369984109.

The spelling of 63969764 in words is "sixty-three million, nine hundred sixty-nine thousand, seven hundred sixty-four".