146720813 has 2 divisors, whose sum is σ = 146720814. Its totient is φ = 146720812.

The previous prime is 146720807. The next prime is 146720839. The reversal of 146720813 is 318027641.

146720813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 28281124 = 10883^2 + 5318^2 .

It is a cyclic number.

It is not a de Polignac number, because 146720813 - 2⁴ = 146720797 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 146720813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146720713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73360406 + 73360407.

It is an arithmetic number, because the mean of its divisors is an integer number (73360407).

Almost surely, 2^146720813 is an apocalyptic number.

It is an amenable number.

146720813 is a deficient number, since it is larger than the sum of its proper divisors (1).

146720813 is an equidigital number, since it uses as much as digits as its factorization.

146720813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 146720813 is about 12112.8367032665. The cubic root of 146720813 is about 527.4288822461.

The spelling of 146720813 in words is "one hundred forty-six million, seven hundred twenty thousand, eight hundred thirteen".