722634739 has 2 divisors, whose sum is σ = 722634740. Its totient is φ = 722634738.

The previous prime is 722634659. The next prime is 722634761. The reversal of 722634739 is 937436227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722634739 - 2⁷ = 722634611 is a prime.

It is a super-3 number, since 3×722634739³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722634695 and 722634704.

It is not a weakly prime, because it can be changed into another prime (722634839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361317369 + 361317370.

It is an arithmetic number, because the mean of its divisors is an integer number (361317370).

Almost surely, 2^722634739 is an apocalyptic number.

722634739 is a deficient number, since it is larger than the sum of its proper divisors (1).

722634739 is an equidigital number, since it uses as much as digits as its factorization.

722634739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 43.

The square root of 722634739 is about 26881.8663600577. The cubic root of 722634739 is about 897.3728899266.

The spelling of 722634739 in words is "seven hundred twenty-two million, six hundred thirty-four thousand, seven hundred thirty-nine".