146681377 has 2 divisors, whose sum is σ = 146681378. Its totient is φ = 146681376.

The previous prime is 146681303. The next prime is 146681383. The reversal of 146681377 is 773186641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130165281 + 16516096 = 11409^2 + 4064^2 .

It is an emirp because it is prime and its reverse (773186641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146681377 - 2¹⁵ = 146648609 is a prime.

It is a super-2 number, since 2×146681377² = 43030852717232258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (146681077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73340688 + 73340689.

It is an arithmetic number, because the mean of its divisors is an integer number (73340689).

Almost surely, 2^146681377 is an apocalyptic number.

It is an amenable number.

146681377 is a deficient number, since it is larger than the sum of its proper divisors (1).

146681377 is an equidigital number, since it uses as much as digits as its factorization.

146681377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 146681377 is about 12111.2087340612. The cubic root of 146681377 is about 527.3816234449.

The spelling of 146681377 in words is "one hundred forty-six million, six hundred eighty-one thousand, three hundred seventy-seven".