85937897 has 4 divisors (see below), whose sum is σ = 86026836. Its totient is φ = 85848960.

The previous prime is 85937881. The next prime is 85937899. The reversal of 85937897 is 79873958.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35868121 + 50069776 = 5989^2 + 7076^2 .

It is a cyclic number.

It is not a de Polignac number, because 85937897 - 2⁴ = 85937881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85937899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43004 + ... + 44957.

It is an arithmetic number, because the mean of its divisors is an integer number (21506709).

Almost surely, 2^85937897 is an apocalyptic number.

It is an amenable number.

85937897 is a deficient number, since it is larger than the sum of its proper divisors (88939).

85937897 is an equidigital number, since it uses as much as digits as its factorization.

85937897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88938.

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

The square root of 85937897 is about 9270.2695214325. The cubic root of 85937897 is about 441.2942214533.

The spelling of 85937897 in words is "eighty-five million, nine hundred thirty-seven thousand, eight hundred ninety-seven".