63696644 has 24 divisors (see below), whose sum is σ = 125798400. Its totient is φ = 27954080.

The previous prime is 63696641. The next prime is 63696691. The reversal of 63696644 is 44669636.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 63696595 and 63696604.

It is not an unprimeable number, because it can be changed into a prime (63696641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23684 + ... + 26235.

It is an arithmetic number, because the mean of its divisors is an integer number (5241600).

Almost surely, 2^63696644 is an apocalyptic number.

It is an amenable number.

63696644 is a deficient number, since it is larger than the sum of its proper divisors (62101756).

63696644 is a wasteful number, since it uses less digits than its factorization.

63696644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49963 (or 49961 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 63696644 is about 7981.0177295881. The cubic root of 63696644 is about 399.3670071619.

The spelling of 63696644 in words is "sixty-three million, six hundred ninety-six thousand, six hundred forty-four".