146810681 has 2 divisors, whose sum is σ = 146810682. Its totient is φ = 146810680.

The previous prime is 146810669. The next prime is 146810687. The reversal of 146810681 is 186018641.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146797456 + 13225 = 12116^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 146810681 - 2¹⁸ = 146548537 is a prime.

It is a super-2 number, since 2×146810681² = 43106752111367522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146810687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73405340 + 73405341.

It is an arithmetic number, because the mean of its divisors is an integer number (73405341).

Almost surely, 2^146810681 is an apocalyptic number.

It is an amenable number.

146810681 is a deficient number, since it is larger than the sum of its proper divisors (1).

146810681 is an equidigital number, since it uses as much as digits as its factorization.

146810681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 146810681 is about 12116.5457536379. The cubic root of 146810681 is about 527.5365454641.

The spelling of 146810681 in words is "one hundred forty-six million, eight hundred ten thousand, six hundred eighty-one".