156897797 has 16 divisors (see below), whose sum is σ = 188090880. Its totient is φ = 128055168.

The previous prime is 156897751. The next prime is 156897799. The reversal of 156897797 is 797798651.

It is a cyclic number.

It is not a de Polignac number, because 156897797 - 2⁶ = 156897733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156897799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5729 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (11755680).

Almost surely, 2^156897797 is an apocalyptic number.

It is an amenable number.

156897797 is a deficient number, since it is larger than the sum of its proper divisors (31193083).

156897797 is a wasteful number, since it uses less digits than its factorization.

156897797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980.

The product of its digits is 6667920, while the sum is 59.

The square root of 156897797 is about 12525.8850785084. The cubic root of 156897797 is about 539.3519855937.

The spelling of 156897797 in words is "one hundred fifty-six million, eight hundred ninety-seven thousand, seven hundred ninety-seven".