66110380 has 48 divisors (see below), whose sum is σ = 159134976. Its totient is φ = 22599360.

The previous prime is 66110377. The next prime is 66110411. The reversal of 66110380 is 8301166.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79527 + ... + 80353.

It is an arithmetic number, because the mean of its divisors is an integer number (3315312).

Almost surely, 2^66110380 is an apocalyptic number.

It is an amenable number.

66110380 is an abundant number, since it is smaller than the sum of its proper divisors (93024596).

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

66110380 is a wasteful number, since it uses less digits than its factorization.

66110380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 66110380 is about 8130.8289860260. The cubic root of 66110380 is about 404.3491655119.

The spelling of 66110380 in words is "sixty-six million, one hundred ten thousand, three hundred eighty".