721112607 has 24 divisors (see below), whose sum is σ = 1078837760. Its totient is φ = 463663440.

The previous prime is 721112603. The next prime is 721112611. The reversal of 721112607 is 706211127.

It is an interprime number because it is at equal distance from previous prime (721112603) and next prime (721112611).

It is not a de Polignac number, because 721112607 - 2² = 721112603 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 (721112603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81444 + ... + 89862.

Almost surely, 2^721112607 is an apocalyptic number.

721112607 is a deficient number, since it is larger than the sum of its proper divisors (357725153).

721112607 is a wasteful number, since it uses less digits than its factorization.

721112607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763 (or 8760 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 721112607 is about 26853.5399342433. The cubic root of 721112607 is about 896.7423822933.

The spelling of 721112607 in words is "seven hundred twenty-one million, one hundred twelve thousand, six hundred seven".