85257770 has 32 divisors (see below), whose sum is σ = 165811968. Its totient is φ = 31376448.

The previous prime is 85257727. The next prime is 85257779. The reversal of 85257770 is 7775258.

It is not an unprimeable number, because it can be changed into a prime (85257779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46817 + ... + 48603.

It is an arithmetic number, because the mean of its divisors is an integer number (5181624).

Almost surely, 2^85257770 is an apocalyptic number.

85257770 is a deficient number, since it is larger than the sum of its proper divisors (80554198).

85257770 is a wasteful number, since it uses less digits than its factorization.

85257770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 85257770 is about 9233.5134158131. The cubic root of 85257770 is about 440.1269778153.

The spelling of 85257770 in words is "eighty-five million, two hundred fifty-seven thousand, seven hundred seventy".