85256644 has 12 divisors (see below), whose sum is σ = 162762768. Its totient is φ = 38753000.

The previous prime is 85256617. The next prime is 85256651. The reversal of 85256644 is 44665258.

It is a super-2 number, since 2×85256644² = 14537390692285472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85256597 and 85256606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968782 + ... + 968869.

It is an arithmetic number, because the mean of its divisors is an integer number (13563564).

Almost surely, 2^85256644 is an apocalyptic number.

It is an amenable number.

85256644 is a deficient number, since it is larger than the sum of its proper divisors (77506124).

85256644 is a wasteful number, since it uses less digits than its factorization.

85256644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937666 (or 1937664 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 85256644 is about 9233.4524420717. The cubic root of 85256644 is about 440.1250402200.

The spelling of 85256644 in words is "eighty-five million, two hundred fifty-six thousand, six hundred forty-four".