723372643 has 12 divisors (see below), whose sum is σ = 842100672. Its totient is φ = 619572240.

The previous prime is 723372623. The next prime is 723372677. The reversal of 723372643 is 346273327.

It is not a de Polignac number, because 723372643 - 2⁹ = 723372131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723372613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72073 + ... + 81493.

It is an arithmetic number, because the mean of its divisors is an integer number (70175056).

Almost surely, 2^723372643 is an apocalyptic number.

723372643 is a deficient number, since it is larger than the sum of its proper divisors (118728029).

723372643 is a wasteful number, since it uses less digits than its factorization.

723372643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11002 (or 10995 counting only the distinct ones).

The product of its digits is 127008, while the sum is 37.

The square root of 723372643 is about 26895.5877980014. The cubic root of 723372643 is about 897.6782308078.

The spelling of 723372643 in words is "seven hundred twenty-three million, three hundred seventy-two thousand, six hundred forty-three".