66116700 has 108 divisors (see below), whose sum is σ = 223220088. Its totient is φ = 16272000.

The previous prime is 66116681. The next prime is 66116711. The reversal of 66116700 is 761166.

It is a super-3 number, since 3×66116700³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8875 + ... + 14525.

Almost surely, 2^66116700 is an apocalyptic number.

66116700 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66116700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111610044).

66116700 is an abundant number, since it is smaller than the sum of its proper divisors (157103388).

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

66116700 is a wasteful number, since it uses less digits than its factorization.

66116700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684 (or 5674 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 66116700 is about 8131.2176209963. The cubic root of 66116700 is about 404.3620500508.

Adding to 66116700 its reverse (761166), we get a palindrome (66877866).

The spelling of 66116700 in words is "sixty-six million, one hundred sixteen thousand, seven hundred".