147237661 has 2 divisors, whose sum is σ = 147237662. Its totient is φ = 147237660.

The previous prime is 147237641. The next prime is 147237691. The reversal of 147237661 is 166732741.

147237661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106213636 + 41024025 = 10306^2 + 6405^2 .

It is a cyclic number.

It is not a de Polignac number, because 147237661 - 2²⁷ = 13019933 is a prime.

It is equal to p_8297731 and since 147237661 and 8297731 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147237661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147237641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73618830 + 73618831.

It is an arithmetic number, because the mean of its divisors is an integer number (73618831).

Almost surely, 2^147237661 is an apocalyptic number.

It is an amenable number.

147237661 is a deficient number, since it is larger than the sum of its proper divisors (1).

147237661 is an equidigital number, since it uses as much as digits as its factorization.

147237661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 147237661 is about 12134.1526692225. The cubic root of 147237661 is about 528.0474745440.

The spelling of 147237661 in words is "one hundred forty-seven million, two hundred thirty-seven thousand, six hundred sixty-one".