146860621 has 2 divisors, whose sum is σ = 146860622. Its totient is φ = 146860620.

The previous prime is 146860579. The next prime is 146860627. The reversal of 146860621 is 126068641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118504996 + 28355625 = 10886^2 + 5325^2 .

It is an emirp because it is prime and its reverse (126068641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 146860621 - 2¹⁷ = 146729549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146860627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73430310 + 73430311.

It is an arithmetic number, because the mean of its divisors is an integer number (73430311).

Almost surely, 2^146860621 is an apocalyptic number.

It is an amenable number.

146860621 is a deficient number, since it is larger than the sum of its proper divisors (1).

146860621 is an equidigital number, since it uses as much as digits as its factorization.

146860621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 146860621 is about 12118.6063967768. The cubic root of 146860621 is about 527.5963553459.

The spelling of 146860621 in words is "one hundred forty-six million, eight hundred sixty thousand, six hundred twenty-one".