85672858 has 4 divisors (see below), whose sum is σ = 128509290. Its totient is φ = 42836428.

The previous prime is 85672841. The next prime is 85672901. The reversal of 85672858 is 85827658.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 64208169 + 21464689 = 8013^2 + 4633^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21418213 + ... + 21418216.

Almost surely, 2^85672858 is an apocalyptic number.

85672858 is a deficient number, since it is larger than the sum of its proper divisors (42836432).

85672858 is a wasteful number, since it uses less digits than its factorization.

85672858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42836431.

The product of its digits is 1075200, while the sum is 49.

The square root of 85672858 is about 9255.9633750356. The cubic root of 85672858 is about 440.8400926474.

The spelling of 85672858 in words is "eighty-five million, six hundred seventy-two thousand, eight hundred fifty-eight".