85601812 has 6 divisors (see below), whose sum is σ = 149803178. Its totient is φ = 42800904.

The previous prime is 85601797. The next prime is 85601827. The reversal of 85601812 is 21810658.

It is an interprime number because it is at equal distance from previous prime (85601797) and next prime (85601827).

It can be written as a sum of positive squares in only one way, i.e., 85303696 + 298116 = 9236^2 + 546^2 .

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, 10700223 + ... + 10700230.

Almost surely, 2^85601812 is an apocalyptic number.

It is an amenable number.

85601812 is a deficient number, since it is larger than the sum of its proper divisors (64201366).

85601812 is a wasteful number, since it uses less digits than its factorization.

85601812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21400457 (or 21400455 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 85601812 is about 9252.1247289474. The cubic root of 85601812 is about 440.7182003410.

The spelling of 85601812 in words is "eighty-five million, six hundred one thousand, eight hundred twelve".