85726861 has 4 divisors (see below), whose sum is σ = 93520224. Its totient is φ = 77933500.

The previous prime is 85726843. The next prime is 85726877. The reversal of 85726861 is 16862758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85726861 - 2⁵ = 85726829 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 (85726831) 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, 3896665 + ... + 3896686.

It is an arithmetic number, because the mean of its divisors is an integer number (23380056).

Almost surely, 2^85726861 is an apocalyptic number.

It is an amenable number.

85726861 is a deficient number, since it is larger than the sum of its proper divisors (7793363).

85726861 is a wasteful number, since it uses less digits than its factorization.

85726861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7793362.

The product of its digits is 161280, while the sum is 43.

The square root of 85726861 is about 9258.8801158671. The cubic root of 85726861 is about 440.9326995233.

The spelling of 85726861 in words is "eighty-five million, seven hundred twenty-six thousand, eight hundred sixty-one".