66168410 has 32 divisors (see below), whose sum is σ = 148493952. Its totient is φ = 20623680.

The previous prime is 66168409. The next prime is 66168419. The reversal of 66168410 is 1486166.

It is a happy number.

It is a super-3 number, since 3×66168410³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66168419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42197 + ... + 43736.

It is an arithmetic number, because the mean of its divisors is an integer number (4640436).

Almost surely, 2^66168410 is an apocalyptic number.

66168410 is an abundant number, since it is smaller than the sum of its proper divisors (82325542).

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

66168410 is a wasteful number, since it uses less digits than its factorization.

66168410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85958.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 66168410 is about 8134.3967201016. The cubic root of 66168410 is about 404.4674400297.

The spelling of 66168410 in words is "sixty-six million, one hundred sixty-eight thousand, four hundred ten".