146669977 has 2 divisors, whose sum is σ = 146669978. Its totient is φ = 146669976.

The previous prime is 146669933. The next prime is 146669981. The reversal of 146669977 is 779966641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136048896 + 10621081 = 11664^2 + 3259^2 .

It is an emirp because it is prime and its reverse (779966641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146669977 - 2¹¹ = 146667929 is a prime.

It is not a weakly prime, because it can be changed into another prime (146669927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73334988 + 73334989.

It is an arithmetic number, because the mean of its divisors is an integer number (73334989).

Almost surely, 2^146669977 is an apocalyptic number.

It is an amenable number.

146669977 is a deficient number, since it is larger than the sum of its proper divisors (1).

146669977 is an equidigital number, since it uses as much as digits as its factorization.

146669977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3429216, while the sum is 55.

The square root of 146669977 is about 12110.7380865082. The cubic root of 146669977 is about 527.3679604828.

The spelling of 146669977 in words is "one hundred forty-six million, six hundred sixty-nine thousand, nine hundred seventy-seven".