146875661 has 2 divisors, whose sum is σ = 146875662. Its totient is φ = 146875660.

The previous prime is 146875639. The next prime is 146875679. The reversal of 146875661 is 166578641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140873161 + 6002500 = 11869^2 + 2450^2 .

It is an emirp because it is prime and its reverse (166578641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146875661 - 2¹⁸ = 146613517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146875621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73437830 + 73437831.

It is an arithmetic number, because the mean of its divisors is an integer number (73437831).

Almost surely, 2^146875661 is an apocalyptic number.

It is an amenable number.

146875661 is a deficient number, since it is larger than the sum of its proper divisors (1).

146875661 is an equidigital number, since it uses as much as digits as its factorization.

146875661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 146875661 is about 12119.2269142879. The cubic root of 146875661 is about 527.6143651165.

The spelling of 146875661 in words is "one hundred forty-six million, eight hundred seventy-five thousand, six hundred sixty-one".