66870410 has 32 divisors (see below), whose sum is σ = 125452800. Its totient is φ = 25634880.

The previous prime is 66870403. The next prime is 66870421. The reversal of 66870410 is 1407866.

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, 32801 + ... + 34779.

It is an arithmetic number, because the mean of its divisors is an integer number (3920400).

Almost surely, 2^66870410 is an apocalyptic number.

66870410 is a deficient number, since it is larger than the sum of its proper divisors (58582390).

66870410 is a wasteful number, since it uses less digits than its factorization.

66870410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 66870410 is about 8177.4329712936. The cubic root of 66870410 is about 405.8927823201.

The spelling of 66870410 in words is "sixty-six million, eight hundred seventy thousand, four hundred ten".