85746866 has 4 divisors (see below), whose sum is σ = 128620302. Its totient is φ = 42873432.

The previous prime is 85746863. The next prime is 85746887. The reversal of 85746866 is 66864758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 62078641 + 23668225 = 7879^2 + 4865^2 .

It is not an unprimeable number, because it can be changed into a prime (85746863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21436715 + ... + 21436718.

Almost surely, 2^85746866 is an apocalyptic number.

85746866 is a deficient number, since it is larger than the sum of its proper divisors (42873436).

85746866 is a wasteful number, since it uses less digits than its factorization.

85746866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42873435.

The product of its digits is 1935360, while the sum is 50.

The square root of 85746866 is about 9259.9603670858. The cubic root of 85746866 is about 440.9669951630.

The spelling of 85746866 in words is "eighty-five million, seven hundred forty-six thousand, eight hundred sixty-six".