85266646 has 4 divisors (see below), whose sum is σ = 127899972. Its totient is φ = 42633322.

The previous prime is 85266637. The next prime is 85266653. The reversal of 85266646 is 64666258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64666258 = 2 ⋅32333129.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21316660 + ... + 21316663.

It is an arithmetic number, because the mean of its divisors is an integer number (31974993).

Almost surely, 2^85266646 is an apocalyptic number.

85266646 is a deficient number, since it is larger than the sum of its proper divisors (42633326).

85266646 is a wasteful number, since it uses less digits than its factorization.

85266646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42633325.

The product of its digits is 414720, while the sum is 43.

The square root of 85266646 is about 9233.9940437494. The cubic root of 85266646 is about 440.1422508377.

The spelling of 85266646 in words is "eighty-five million, two hundred sixty-six thousand, six hundred forty-six".