85977711 has 24 divisors (see below), whose sum is σ = 127395840. Its totient is φ = 55850256.

The previous prime is 85977709. The next prime is 85977719. The reversal of 85977711 is 11777958.

It is a happy number.

It is not a de Polignac number, because 85977711 - 2¹ = 85977709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85977719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 185466 + ... + 185928.

It is an arithmetic number, because the mean of its divisors is an integer number (5308160).

Almost surely, 2^85977711 is an apocalyptic number.

85977711 is a deficient number, since it is larger than the sum of its proper divisors (41418129).

85977711 is a wasteful number, since it uses less digits than its factorization.

85977711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its digits is 123480, while the sum is 45.

The square root of 85977711 is about 9272.4166752794. The cubic root of 85977711 is about 441.3623597104.

The spelling of 85977711 in words is "eighty-five million, nine hundred seventy-seven thousand, seven hundred eleven".