722606497 has 8 divisors (see below), whose sum is σ = 746226432. Its totient is φ = 699006000.

The previous prime is 722606413. The next prime is 722606501. The reversal of 722606497 is 794606227.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722606497 is a prime.

It is a super-2 number, since 2×722606497² = 1044320299013222018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722606407) 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, 135363 + ... + 140599.

It is an arithmetic number, because the mean of its divisors is an integer number (93278304).

Almost surely, 2^722606497 is an apocalyptic number.

It is an amenable number.

722606497 is a deficient number, since it is larger than the sum of its proper divisors (23619935).

722606497 is a wasteful number, since it uses less digits than its factorization.

722606497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 722606497 is about 26881.3410565768. The cubic root of 722606497 is about 897.3611994031.

The spelling of 722606497 in words is "seven hundred twenty-two million, six hundred six thousand, four hundred ninety-seven".