86750505 has 12 divisors (see below), whose sum is σ = 150367620. Its totient is φ = 46266912.

The previous prime is 86750497. The next prime is 86750509. The reversal of 86750505 is 50505768.

86750505 is a `hidden beast` number, since 86 + 75 + 0 + 505 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9960336 + 76790169 = 3156^2 + 8763^2 .

It is not a de Polignac number, because 86750505 - 2³ = 86750497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86750505.

It is not an unprimeable number, because it can be changed into a prime (86750509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 963850 + ... + 963939.

It is an arithmetic number, because the mean of its divisors is an integer number (12530635).

Almost surely, 2^86750505 is an apocalyptic number.

It is an amenable number.

86750505 is a deficient number, since it is larger than the sum of its proper divisors (63617115).

86750505 is a wasteful number, since it uses less digits than its factorization.

86750505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927800 (or 1927797 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 86750505 is about 9313.9951148795. The cubic root of 86750505 is about 442.6807841213.

The spelling of 86750505 in words is "eighty-six million, seven hundred fifty thousand, five hundred five".