66040116 has 48 divisors (see below), whose sum is σ = 161004480. Its totient is φ = 21047040.

The previous prime is 66040111. The next prime is 66040171. The reversal of 66040116 is 61104066.

It is a super-2 number, since 2×66040116² = 8722593842586912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66040111) 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, 24936 + ... + 27456.

It is an arithmetic number, because the mean of its divisors is an integer number (3354260).

Almost surely, 2^66040116 is an apocalyptic number.

It is an amenable number.

66040116 is an abundant number, since it is smaller than the sum of its proper divisors (94964364).

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

66040116 is a wasteful number, since it uses less digits than its factorization.

66040116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 66040116 is about 8126.5069987049. The cubic root of 66040116 is about 404.2058634509.

The spelling of 66040116 in words is "sixty-six million, forty thousand, one hundred sixteen".