85662644 has 6 divisors (see below), whose sum is σ = 149909634. Its totient is φ = 42831320.

The previous prime is 85662637. The next prime is 85662673. The reversal of 85662644 is 44626658.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 31787044 = 7340^2 + 5638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707827 + ... + 10707834.

It is an arithmetic number, because the mean of its divisors is an integer number (24984939).

Almost surely, 2^85662644 is an apocalyptic number.

It is an amenable number.

85662644 is a deficient number, since it is larger than the sum of its proper divisors (64246990).

85662644 is a wasteful number, since it uses less digits than its factorization.

85662644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21415665 (or 21415663 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 85662644 is about 9255.4116061902. The cubic root of 85662644 is about 440.8225728255.

The spelling of 85662644 in words is "eighty-five million, six hundred sixty-two thousand, six hundred forty-four".