85974619 has 4 divisors (see below), whose sum is σ = 85997296. Its totient is φ = 85951944.

The previous prime is 85974571. The next prime is 85974641. The reversal of 85974619 is 91647958.

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 85974619 - 2²⁵ = 52420187 is a prime.

It is a super-2 number, since 2×85974619² = 14783270224390322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85974019) 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, 4119 + ... + 13744.

It is an arithmetic number, because the mean of its divisors is an integer number (21499324).

Almost surely, 2^85974619 is an apocalyptic number.

85974619 is a deficient number, since it is larger than the sum of its proper divisors (22677).

85974619 is a wasteful number, since it uses less digits than its factorization.

85974619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676.

The product of its digits is 544320, while the sum is 49.

The square root of 85974619 is about 9272.2499427054. The cubic root of 85974619 is about 441.3570687702.

The spelling of 85974619 in words is "eighty-five million, nine hundred seventy-four thousand, six hundred nineteen".