158947697 has 2 divisors, whose sum is σ = 158947698. Its totient is φ = 158947696.

The previous prime is 158947661. The next prime is 158947699. The reversal of 158947697 is 796749851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95570176 + 63377521 = 9776^2 + 7961^2 .

It is a cyclic number.

It is not a de Polignac number, because 158947697 - 2⁸ = 158947441 is a prime.

Together with 158947699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (158947699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79473848 + 79473849.

It is an arithmetic number, because the mean of its divisors is an integer number (79473849).

Almost surely, 2^158947697 is an apocalyptic number.

It is an amenable number.

158947697 is a deficient number, since it is larger than the sum of its proper divisors (1).

158947697 is an equidigital number, since it uses as much as digits as its factorization.

158947697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 158947697 is about 12607.4460934798. The cubic root of 158947697 is about 541.6907421357.

The spelling of 158947697 in words is "one hundred fifty-eight million, nine hundred forty-seven thousand, six hundred ninety-seven".