8101864 has 8 divisors (see below), whose sum is σ = 15191010. Its totient is φ = 4050928.

The previous prime is 8101859. The next prime is 8101867. The reversal of 8101864 is 4681018.

It can be written as a sum of positive squares in only one way, i.e., 4708900 + 3392964 = 2170^2 + 1842^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (8101867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506359 + ... + 506374.

Almost surely, 2^8101864 is an apocalyptic number.

It is an amenable number.

8101864 is a deficient number, since it is larger than the sum of its proper divisors (7089146).

8101864 is a wasteful number, since it uses less digits than its factorization.

8101864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012739 (or 1012735 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 8101864 is about 2846.3773467339. The cubic root of 8101864 is about 200.8452890656.

The spelling of 8101864 in words is "eight million, one hundred one thousand, eight hundred sixty-four".