146870081 has 2 divisors, whose sum is σ = 146870082. Its totient is φ = 146870080.

The previous prime is 146870051. The next prime is 146870093. The reversal of 146870081 is 180078641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141229456 + 5640625 = 11884^2 + 2375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146870081 is a prime.

It is a super-2 number, since 2×146870081² = 43141641385893122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (146870011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73435040 + 73435041.

It is an arithmetic number, because the mean of its divisors is an integer number (73435041).

Almost surely, 2^146870081 is an apocalyptic number.

It is an amenable number.

146870081 is a deficient number, since it is larger than the sum of its proper divisors (1).

146870081 is an equidigital number, since it uses as much as digits as its factorization.

146870081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 146870081 is about 12118.9966993972. The cubic root of 146870081 is about 527.6076834435.

The spelling of 146870081 in words is "one hundred forty-six million, eight hundred seventy thousand, eighty-one".