66504068 has 12 divisors (see below), whose sum is σ = 123228252. Its totient is φ = 31296000.

The previous prime is 66504043. The next prime is 66504089. The reversal of 66504068 is 86040566.

It can be written as a sum of positive squares in 2 ways, for example, as 27541504 + 38962564 = 5248^2 + 6242^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488933 + ... + 489068.

It is an arithmetic number, because the mean of its divisors is an integer number (10269021).

Almost surely, 2^66504068 is an apocalyptic number.

66504068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

66504068 is a deficient number, since it is larger than the sum of its proper divisors (56724184).

66504068 is a wasteful number, since it uses less digits than its factorization.

66504068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978022 (or 978020 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 66504068 is about 8155.0026364189. The cubic root of 66504068 is about 405.1502120241.

The spelling of 66504068 in words is "sixty-six million, five hundred four thousand, sixty-eight".