147065621 has 2 divisors, whose sum is σ = 147065622. Its totient is φ = 147065620.

The previous prime is 147065593. The next prime is 147065629. The reversal of 147065621 is 126560741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136632721 + 10432900 = 11689^2 + 3230^2 .

It is an emirp because it is prime and its reverse (126560741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147065621 - 2¹⁴ = 147049237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147065629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73532810 + 73532811.

It is an arithmetic number, because the mean of its divisors is an integer number (73532811).

Almost surely, 2^147065621 is an apocalyptic number.

It is an amenable number.

147065621 is a deficient number, since it is larger than the sum of its proper divisors (1).

147065621 is an equidigital number, since it uses as much as digits as its factorization.

147065621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 147065621 is about 12127.0615154703. The cubic root of 147065621 is about 527.8417285126.

The spelling of 147065621 in words is "one hundred forty-seven million, sixty-five thousand, six hundred twenty-one".