722601664 has 14 divisors (see below), whose sum is σ = 1433912804. Its totient is φ = 361300800.

The previous prime is 722601653. The next prime is 722601667. The reversal of 722601664 is 466106227.

It is not an unprimeable number, because it can be changed into a prime (722601667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5645262 + ... + 5645389.

Almost surely, 2^722601664 is an apocalyptic number.

It is an amenable number.

722601664 is a deficient number, since it is larger than the sum of its proper divisors (711311140).

722601664 is a wasteful number, since it uses less digits than its factorization.

722601664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11290663 (or 11290653 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 722601664 is about 26881.2511613578. The cubic root of 722601664 is about 897.3591987954.

The spelling of 722601664 in words is "seven hundred twenty-two million, six hundred one thousand, six hundred sixty-four".