85642970 has 16 divisors (see below), whose sum is σ = 176179968. Its totient is φ = 29363280.

The previous prime is 85642933. The next prime is 85642979. The reversal of 85642970 is 7924658.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85642979) 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, 611666 + ... + 611805.

It is an arithmetic number, because the mean of its divisors is an integer number (11011248).

Almost surely, 2^85642970 is an apocalyptic number.

85642970 is an abundant number, since it is smaller than the sum of its proper divisors (90536998).

85642970 is a wasteful number, since it uses less digits than its factorization.

85642970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223485.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 85642970 is about 9254.3487074996. The cubic root of 85642970 is about 440.7888225740.

The spelling of 85642970 in words is "eighty-five million, six hundred forty-two thousand, nine hundred seventy".