66706376 has 32 divisors (see below), whose sum is σ = 136766880. Its totient is φ = 30249600.

The previous prime is 66706363. The next prime is 66706391. The reversal of 66706376 is 67360766.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60260 + ... + 61356.

It is an arithmetic number, because the mean of its divisors is an integer number (4273965).

Almost surely, 2^66706376 is an apocalyptic number.

It is an amenable number.

66706376 is an abundant number, since it is smaller than the sum of its proper divisors (70060504).

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

66706376 is a wasteful number, since it uses less digits than its factorization.

66706376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 66706376 is about 8167.3971373994. The cubic root of 66706376 is about 405.5606237880.

The spelling of 66706376 in words is "sixty-six million, seven hundred six thousand, three hundred seventy-six".