85187670 has 16 divisors (see below), whose sum is σ = 204450480. Its totient is φ = 22716704.

The previous prime is 85187647. The next prime is 85187671. The reversal of 85187670 is 7678158.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85187671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419765 + ... + 1419824.

It is an arithmetic number, because the mean of its divisors is an integer number (12778155).

Almost surely, 2^85187670 is an apocalyptic number.

85187670 is an abundant number, since it is smaller than the sum of its proper divisors (119262810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85187670 is a wasteful number, since it uses less digits than its factorization.

85187670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839599.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 85187670 is about 9229.7166803754. The cubic root of 85187670 is about 440.0063187798.

The spelling of 85187670 in words is "eighty-five million, one hundred eighty-seven thousand, six hundred seventy".