8661504 has 40 divisors (see below), whose sum is σ = 23078880. Its totient is φ = 2886656.

The previous prime is 8661491. The next prime is 8661509. The reversal of 8661504 is 4051668.

It is a super-3 number, since 3×8661504³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8661509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1284 + ... + 4355.

It is an arithmetic number, because the mean of its divisors is an integer number (576972).

Almost surely, 2^8661504 is an apocalyptic number.

It is an amenable number.

8661504 is an abundant number, since it is smaller than the sum of its proper divisors (14417376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8661504 is an equidigital number, since it uses as much as digits as its factorization.

8661504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 8661504 is about 2943.0433228208. The cubic root of 8661504 is about 205.3672101674.

The spelling of 8661504 in words is "eight million, six hundred sixty-one thousand, five hundred four".