146696981 has 2 divisors, whose sum is σ = 146696982. Its totient is φ = 146696980.

The previous prime is 146696959. The next prime is 146696983. The reversal of 146696981 is 189696641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133980625 + 12716356 = 11575^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 146696981 - 2²² = 142502677 is a prime.

It is a super-2 number, since 2×146696981² = 43040008469028722, which contains 22 as substring.

Together with 146696983, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146696983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73348490 + 73348491.

It is an arithmetic number, because the mean of its divisors is an integer number (73348491).

Almost surely, 2^146696981 is an apocalyptic number.

It is an amenable number.

146696981 is a deficient number, since it is larger than the sum of its proper divisors (1).

146696981 is an equidigital number, since it uses as much as digits as its factorization.

146696981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 146696981 is about 12111.8529135719. The cubic root of 146696981 is about 527.4003237763.

The spelling of 146696981 in words is "one hundred forty-six million, six hundred ninety-six thousand, nine hundred eighty-one".