85277983 has 6 divisors (see below), whose sum is σ = 99200976. Its totient is φ = 73095372.

The previous prime is 85277977. The next prime is 85277989. The reversal of 85277983 is 38977258.

It is an interprime number because it is at equal distance from previous prime (85277977) and next prime (85277989).

It is a de Polignac number, because none of the positive numbers 2^k-85277983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1740367 = 85277983 / (8 + 5 + 2 + 7 + 7 + 9 + 8 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85277989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870135 + ... + 870232.

It is an arithmetic number, because the mean of its divisors is an integer number (16533496).

Almost surely, 2^85277983 is an apocalyptic number.

85277983 is a deficient number, since it is larger than the sum of its proper divisors (13922993).

85277983 is a wasteful number, since it uses less digits than its factorization.

85277983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740381 (or 1740374 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 85277983 is about 9234.6078963863. The cubic root of 85277983 is about 440.1617569861.

The spelling of 85277983 in words is "eighty-five million, two hundred seventy-seven thousand, nine hundred eighty-three".