85697378 has 16 divisors (see below), whose sum is σ = 143209080. Its totient is φ = 38188416.

The previous prime is 85697377. The next prime is 85697387. The reversal of 85697378 is 87379658.

It can be written as a sum of positive squares in 4 ways, for example, as 74252689 + 11444689 = 8617^2 + 3383^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85697377) 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 7 ways as a sum of consecutive naturals, for example, 56075 + ... + 57582.

Almost surely, 2^85697378 is an apocalyptic number.

85697378 is a deficient number, since it is larger than the sum of its proper divisors (57511702).

85697378 is a wasteful number, since it uses less digits than its factorization.

85697378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113701.

The product of its digits is 2540160, while the sum is 53.

The square root of 85697378 is about 9257.2878317572. The cubic root of 85697378 is about 440.8821455148.

The spelling of 85697378 in words is "eighty-five million, six hundred ninety-seven thousand, three hundred seventy-eight".