86776755 has 32 divisors (see below), whose sum is σ = 158324544. Its totient is φ = 40206336.

The previous prime is 86776751. The next prime is 86776757. The reversal of 86776755 is 55767768.

It is not a de Polignac number, because 86776755 - 2² = 86776751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 86776698 and 86776707.

It is not an unprimeable number, because it can be changed into a prime (86776751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9774 + ... + 16403.

It is an arithmetic number, because the mean of its divisors is an integer number (4947642).

Almost surely, 2^86776755 is an apocalyptic number.

86776755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

86776755 is a deficient number, since it is larger than the sum of its proper divisors (71547789).

86776755 is a wasteful number, since it uses less digits than its factorization.

86776755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26215.

The product of its digits is 2469600, while the sum is 51.

The square root of 86776755 is about 9315.4041780268. The cubic root of 86776755 is about 442.7254301580.

The spelling of 86776755 in words is "eighty-six million, seven hundred seventy-six thousand, seven hundred fifty-five".