820160723 has 2 divisors, whose sum is σ = 820160724. Its totient is φ = 820160722.

The previous prime is 820160701. The next prime is 820160729. The reversal of 820160723 is 327061028.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820160723 - 2⁶ = 820160659 is a prime.

It is a super-2 number, since 2×820160723² = 1345327223103765458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (820160729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410080361 + 410080362.

It is an arithmetic number, because the mean of its divisors is an integer number (410080362).

Almost surely, 2^820160723 is an apocalyptic number.

820160723 is a deficient number, since it is larger than the sum of its proper divisors (1).

820160723 is an equidigital number, since it uses as much as digits as its factorization.

820160723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 820160723 is about 28638.4483343634. The cubic root of 820160723 is about 936.0513108179.

The spelling of 820160723 in words is "eight hundred twenty million, one hundred sixty thousand, seven hundred twenty-three".