85468991 has 4 divisors (see below), whose sum is σ = 86870184. Its totient is φ = 84067800.

The previous prime is 85468949. The next prime is 85469039. The reversal of 85468991 is 19986458.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85468991 - 2¹⁴ = 85452607 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 (85461991) 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, 700505 + ... + 700626.

It is an arithmetic number, because the mean of its divisors is an integer number (21717546).

Almost surely, 2^85468991 is an apocalyptic number.

85468991 is a deficient number, since it is larger than the sum of its proper divisors (1401193).

85468991 is a wasteful number, since it uses less digits than its factorization.

85468991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401192.

The product of its digits is 622080, while the sum is 50.

The square root of 85468991 is about 9244.9440777108. The cubic root of 85468991 is about 440.4901407853.

The spelling of 85468991 in words is "eighty-five million, four hundred sixty-eight thousand, nine hundred ninety-one".