85707877 has 4 divisors (see below), whose sum is σ = 85733676. Its totient is φ = 85682080.

The previous prime is 85707871. The next prime is 85707883. The reversal of 85707877 is 77870758.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (85707871) and next prime (85707883).

It can be written as a sum of positive squares in 2 ways, for example, as 27552001 + 58155876 = 5249^2 + 7626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85707877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85707877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85707871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7024 + ... + 14857.

It is an arithmetic number, because the mean of its divisors is an integer number (21433419).

Almost surely, 2^85707877 is an apocalyptic number.

It is an amenable number.

85707877 is a deficient number, since it is larger than the sum of its proper divisors (25799).

85707877 is a wasteful number, since it uses less digits than its factorization.

85707877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25798.

The product of its (nonzero) digits is 768320, while the sum is 49.

The square root of 85707877 is about 9257.8548811266. The cubic root of 85707877 is about 440.9001493042.

The spelling of 85707877 in words is "eighty-five million, seven hundred seven thousand, eight hundred seventy-seven".