85457866 has 8 divisors (see below), whose sum is σ = 138047364. Its totient is φ = 39442080.

The previous prime is 85457863. The next prime is 85457887. The reversal of 85457866 is 66875458.

It can be written as a sum of positive squares in 2 ways, for example, as 78588225 + 6869641 = 8865^2 + 2621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×85457866² = 14606093722547912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85457863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643395 + ... + 1643446.

Almost surely, 2^85457866 is an apocalyptic number.

85457866 is a deficient number, since it is larger than the sum of its proper divisors (52589498).

85457866 is a wasteful number, since it uses less digits than its factorization.

85457866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286856.

The product of its digits is 1612800, while the sum is 49.

The square root of 85457866 is about 9244.3423779088. The cubic root of 85457866 is about 440.4710279453.

The spelling of 85457866 in words is "eighty-five million, four hundred fifty-seven thousand, eight hundred sixty-six".