63644694 has 8 divisors (see below), whose sum is σ = 127289400. Its totient is φ = 21214896.

The previous prime is 63644689. The next prime is 63644717. The reversal of 63644694 is 49644636.

It is a sphenic number, since it is the product of 3 distinct primes.

63644694 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5303719 + ... + 5303730.

It is an arithmetic number, because the mean of its divisors is an integer number (15911175).

Almost surely, 2^63644694 is an apocalyptic number.

63644694 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63644694 is a wasteful number, since it uses less digits than its factorization.

63644694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10607454.

The product of its digits is 373248, while the sum is 42.

The square root of 63644694 is about 7977.7624682614. The cubic root of 63644694 is about 399.2584051089.

The spelling of 63644694 in words is "sixty-three million, six hundred forty-four thousand, six hundred ninety-four".