156897 has 20 divisors (see below), whose sum is σ = 254100. Its totient is φ = 95904.

The previous prime is 156887. The next prime is 156899. The reversal of 156897 is 798651.

156897 is a `hidden beast` number, since 1 + 568 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20736 + 136161 = 144^2 + 369^2 .

It is not a de Polignac number, because 156897 - 2⁶ = 156833 is a prime.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (156899) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 979 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (12705).

2¹⁵⁶⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

156897 is a deficient number, since it is larger than the sum of its proper divisors (97203).

156897 is a wasteful number, since it uses less digits than its factorization.

156897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 165 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 156897 is about 396.1022595240. The cubic root of 156897 is about 53.9351072336.

The spelling of 156897 in words is "one hundred fifty-six thousand, eight hundred ninety-seven".