715921823 has 2 divisors, whose sum is σ = 715921824. Its totient is φ = 715921822.

The previous prime is 715921807. The next prime is 715921831. The reversal of 715921823 is 328129517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 715921823 - 2⁴ = 715921807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (715921853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357960911 + 357960912.

It is an arithmetic number, because the mean of its divisors is an integer number (357960912).

Almost surely, 2^715921823 is an apocalyptic number.

715921823 is a deficient number, since it is larger than the sum of its proper divisors (1).

715921823 is an equidigital number, since it uses as much as digits as its factorization.

715921823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 715921823 is about 26756.7154748112. The cubic root of 715921823 is about 894.5855255527.

It can be divided in two parts, 7159 and 21823, that added together give a palindrome (28982).

The spelling of 715921823 in words is "seven hundred fifteen million, nine hundred twenty-one thousand, eight hundred twenty-three".