8181064 has 8 divisors (see below), whose sum is σ = 15339510. Its totient is φ = 4090528.

The previous prime is 8181053. The next prime is 8181071. The reversal of 8181064 is 4601818.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 58564 = 2850^2 + 242^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511309 + ... + 511324.

Almost surely, 2^8181064 is an apocalyptic number.

It is an amenable number.

8181064 is a deficient number, since it is larger than the sum of its proper divisors (7158446).

8181064 is a wasteful number, since it uses less digits than its factorization.

8181064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022639 (or 1022635 counting only the distinct ones).

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

The square root of 8181064 is about 2860.2559326046. The cubic root of 8181064 is about 201.4976242826.

The spelling of 8181064 in words is "eight million, one hundred eighty-one thousand, sixty-four".