66904110 has 192 divisors, whose sum is σ = 224078400. Its totient is φ = 14079744.

The previous prime is 66904099. The next prime is 66904121. The reversal of 66904110 is 1140966.

It is an interprime number because it is at equal distance from previous prime (66904099) and next prime (66904121).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 171796 + ... + 172184.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^66904110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66904110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112039200).

66904110 is an abundant number, since it is smaller than the sum of its proper divisors (157174290).

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

66904110 is a wasteful number, since it uses less digits than its factorization.

66904110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 66904110 is about 8179.4932605877. The cubic root of 66904110 is about 405.9609554208.

The spelling of 66904110 in words is "sixty-six million, nine hundred four thousand, one hundred ten".