63994722 has 48 divisors (see below), whose sum is σ = 141750336. Its totient is φ = 19245600.

The previous prime is 63994703. The next prime is 63994729. The reversal of 63994722 is 22749936.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (63994729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131163 + ... + 131649.

It is an arithmetic number, because the mean of its divisors is an integer number (2953132).

Almost surely, 2^63994722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63994722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70875168).

63994722 is an abundant number, since it is smaller than the sum of its proper divisors (77755614).

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

63994722 is a wasteful number, since it uses less digits than its factorization.

63994722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 684 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 63994722 is about 7999.6701181986. The cubic root of 63994722 is about 399.9890038644.

The spelling of 63994722 in words is "sixty-three million, nine hundred ninety-four thousand, seven hundred twenty-two".