147657689 has 2 divisors, whose sum is σ = 147657690. Its totient is φ = 147657688.

The previous prime is 147657673. The next prime is 147657701. The reversal of 147657689 is 986756741.

147657689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146410000 + 1247689 = 12100^2 + 1117^2 .

It is a cyclic number.

It is not a de Polignac number, because 147657689 - 2⁴ = 147657673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 147657689.

It is not a weakly prime, because it can be changed into another prime (147657089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73828844 + 73828845.

It is an arithmetic number, because the mean of its divisors is an integer number (73828845).

Almost surely, 2^147657689 is an apocalyptic number.

It is an amenable number.

147657689 is a deficient number, since it is larger than the sum of its proper divisors (1).

147657689 is an equidigital number, since it uses as much as digits as its factorization.

147657689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 147657689 is about 12151.4480207093. The cubic root of 147657689 is about 528.5491219046.

The spelling of 147657689 in words is "one hundred forty-seven million, six hundred fifty-seven thousand, six hundred eighty-nine".