85507770 has 16 divisors (see below), whose sum is σ = 205218720. Its totient is φ = 22802064.

The previous prime is 85507769. The next prime is 85507801. The reversal of 85507770 is 7770558.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1425100 + ... + 1425159.

It is an arithmetic number, because the mean of its divisors is an integer number (12826170).

Almost surely, 2^85507770 is an apocalyptic number.

85507770 is an abundant number, since it is smaller than the sum of its proper divisors (119710950).

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

85507770 is a wasteful number, since it uses less digits than its factorization.

85507770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850269.

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 85507770 is about 9247.0411483890. The cubic root of 85507770 is about 440.5567504573.

The spelling of 85507770 in words is "eighty-five million, five hundred seven thousand, seven hundred seventy".