146666969 has 2 divisors, whose sum is σ = 146666970. Its totient is φ = 146666968.

The previous prime is 146666951. The next prime is 146666977. The reversal of 146666969 is 969666641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127961344 + 18705625 = 11312^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 146666969 - 2²⁰ = 145618393 is a prime.

It is a super-2 number, since 2×146666969² = 43022399591293922, which contains 22 as substring.

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 146666969.

It is not a weakly prime, because it can be changed into another prime (146666269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73333484 + 73333485.

It is an arithmetic number, because the mean of its divisors is an integer number (73333485).

Almost surely, 2^146666969 is an apocalyptic number.

It is an amenable number.

146666969 is a deficient number, since it is larger than the sum of its proper divisors (1).

146666969 is an equidigital number, since it uses as much as digits as its factorization.

146666969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 53.

The square root of 146666969 is about 12110.6138985602. The cubic root of 146666969 is about 527.3643552604.

The spelling of 146666969 in words is "one hundred forty-six million, six hundred sixty-six thousand, nine hundred sixty-nine".