63722066 has 8 divisors (see below), whose sum is σ = 98166540. Its totient is φ = 30999888.

The previous prime is 63722063. The next prime is 63722093. The reversal of 63722066 is 66022736.

It can be written as a sum of positive squares in 2 ways, for example, as 48706441 + 15015625 = 6979^2 + 3875^2 .

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

It is not an unprimeable number, because it can be changed into a prime (63722063) 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, 430481 + ... + 430628.

Almost surely, 2^63722066 is an apocalyptic number.

63722066 is a deficient number, since it is larger than the sum of its proper divisors (34444474).

63722066 is a wasteful number, since it uses less digits than its factorization.

63722066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861148.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 63722066 is about 7982.6102247323. The cubic root of 63722066 is about 399.4201306183.

The spelling of 63722066 in words is "sixty-three million, seven hundred twenty-two thousand, sixty-six".