85870574 has 4 divisors (see below), whose sum is σ = 128805864. Its totient is φ = 42935286.

The previous prime is 85870573. The next prime is 85870579. The reversal of 85870574 is 47507858.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85870571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467642 + ... + 21467645.

It is an arithmetic number, because the mean of its divisors is an integer number (32201466).

Almost surely, 2^85870574 is an apocalyptic number.

85870574 is a deficient number, since it is larger than the sum of its proper divisors (42935290).

85870574 is a wasteful number, since it uses less digits than its factorization.

85870574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42935289.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 85870574 is about 9266.6376858060. The cubic root of 85870574 is about 441.1789559989.

The spelling of 85870574 in words is "eighty-five million, eight hundred seventy thousand, five hundred seventy-four".