85864388 has 6 divisors (see below), whose sum is σ = 150262686. Its totient is φ = 42932192.

The previous prime is 85864367. The next prime is 85864403. The reversal of 85864388 is 88346858.

It can be written as a sum of positive squares in only one way, i.e., 72454144 + 13410244 = 8512^2 + 3662^2 .

It is a super-2 number, since 2×85864388² = 14745386253229088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10733045 + ... + 10733052.

It is an arithmetic number, because the mean of its divisors is an integer number (25043781).

Almost surely, 2^85864388 is an apocalyptic number.

It is an amenable number.

85864388 is a deficient number, since it is larger than the sum of its proper divisors (64398298).

85864388 is a wasteful number, since it uses less digits than its factorization.

85864388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21466101 (or 21466099 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The square root of 85864388 is about 9266.3039017723. The cubic root of 85864388 is about 441.1683617661.

The spelling of 85864388 in words is "eighty-five million, eight hundred sixty-four thousand, three hundred eighty-eight".