722717629 has 4 divisors (see below), whose sum is σ = 727321084. Its totient is φ = 718114176.

The previous prime is 722717627. The next prime is 722717657. The reversal of 722717629 is 926717227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926717227 = 2539 ⋅364993.

It can be written as a sum of positive squares in 2 ways, for example, as 533517604 + 189200025 = 23098^2 + 13755^2 .

It is a cyclic number.

It is not a de Polignac number, because 722717629 - 2¹ = 722717627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722717621) 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, 2301492 + ... + 2301805.

It is an arithmetic number, because the mean of its divisors is an integer number (181830271).

Almost surely, 2^722717629 is an apocalyptic number.

It is an amenable number.

722717629 is a deficient number, since it is larger than the sum of its proper divisors (4603455).

722717629 is a wasteful number, since it uses less digits than its factorization.

722717629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603454.

The product of its digits is 148176, while the sum is 43.

The square root of 722717629 is about 26883.4080614791. The cubic root of 722717629 is about 897.4071997427.

The spelling of 722717629 in words is "seven hundred twenty-two million, seven hundred seventeen thousand, six hundred twenty-nine".