85655670 has 16 divisors (see below), whose sum is σ = 205573680. Its totient is φ = 22841504.

The previous prime is 85655663. The next prime is 85655677. The reversal of 85655670 is 7655658.

It is an interprime number because it is at equal distance from previous prime (85655663) and next prime (85655677).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85655677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427565 + ... + 1427624.

It is an arithmetic number, because the mean of its divisors is an integer number (12848355).

Almost surely, 2^85655670 is an apocalyptic number.

85655670 is an abundant number, since it is smaller than the sum of its proper divisors (119918010).

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

85655670 is a wasteful number, since it uses less digits than its factorization.

85655670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855199.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 85655670 is about 9255.0348459636. The cubic root of 85655670 is about 440.8106096954.

The spelling of 85655670 in words is "eighty-five million, six hundred fifty-five thousand, six hundred seventy".