85740810 has 32 divisors (see below), whose sum is σ = 207358272. Its totient is φ = 22688640.

The previous prime is 85740769. The next prime is 85740827. The reversal of 85740810 is 1804758.

It is a happy number.

It is a super-2 number, since 2×85740810² = 14702972998912200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 6979 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (6479946).

Almost surely, 2^85740810 is an apocalyptic number.

85740810 is an abundant number, since it is smaller than the sum of its proper divisors (121617462).

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

85740810 is a wasteful number, since it uses less digits than its factorization.

85740810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21958.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 85740810 is about 9259.6333620722. The cubic root of 85740810 is about 440.9566136018.

The spelling of 85740810 in words is "eighty-five million, seven hundred forty thousand, eight hundred ten".