66317804 has 24 divisors (see below), whose sum is σ = 136915968. Its totient is φ = 27504720.

The previous prime is 66317789. The next prime is 66317813. The reversal of 66317804 is 40871366.

It is a super-2 number, since 2×66317804² = 8796102254764832, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37334 + ... + 39069.

It is an arithmetic number, because the mean of its divisors is an integer number (5704832).

Almost surely, 2^66317804 is an apocalyptic number.

It is an amenable number.

66317804 is an abundant number, since it is smaller than the sum of its proper divisors (70598164).

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

66317804 is a wasteful number, since it uses less digits than its factorization.

66317804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76445 (or 76443 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 66317804 is about 8143.5743994882. The cubic root of 66317804 is about 404.7716113109.

The spelling of 66317804 in words is "sixty-six million, three hundred seventeen thousand, eight hundred four".