723496651 has 2 divisors, whose sum is σ = 723496652. Its totient is φ = 723496650.

The previous prime is 723496643. The next prime is 723496681. The reversal of 723496651 is 156694327.

It is a weak prime.

It is an emirp because it is prime and its reverse (156694327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723496651 - 2³ = 723496643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 723496598 and 723496607.

It is not a weakly prime, because it can be changed into another prime (723496681) 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 as a sum of consecutive naturals, namely, 361748325 + 361748326.

It is an arithmetic number, because the mean of its divisors is an integer number (361748326).

Almost surely, 2^723496651 is an apocalyptic number.

723496651 is a deficient number, since it is larger than the sum of its proper divisors (1).

723496651 is an equidigital number, since it uses as much as digits as its factorization.

723496651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 723496651 is about 26897.8930587509. The cubic root of 723496651 is about 897.7295242974.

The spelling of 723496651 in words is "seven hundred twenty-three million, four hundred ninety-six thousand, six hundred fifty-one".