85145974 has 4 divisors (see below), whose sum is σ = 127718964. Its totient is φ = 42572986.

The previous prime is 85145947. The next prime is 85145981. The reversal of 85145974 is 47954158.

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

It is a self number, because there is not a number n which added to its sum of digits gives 85145974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21286492 + ... + 21286495.

It is an arithmetic number, because the mean of its divisors is an integer number (31929741).

Almost surely, 2^85145974 is an apocalyptic number.

85145974 is a deficient number, since it is larger than the sum of its proper divisors (42572990).

85145974 is a wasteful number, since it uses less digits than its factorization.

85145974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42572989.

The product of its digits is 201600, while the sum is 43.

The square root of 85145974 is about 9227.4576130156. The cubic root of 85145974 is about 439.9345184923.

The spelling of 85145974 in words is "eighty-five million, one hundred forty-five thousand, nine hundred seventy-four".