66084738 has 32 divisors (see below), whose sum is σ = 137037120. Its totient is φ = 21228480.

The previous prime is 66084709. The next prime is 66084749. The reversal of 66084738 is 83748066.

It is a self number, because there is not a number n which added to its sum of digits gives 66084738.

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, 22833 + ... + 25563.

It is an arithmetic number, because the mean of its divisors is an integer number (4282410).

Almost surely, 2^66084738 is an apocalyptic number.

66084738 is an abundant number, since it is smaller than the sum of its proper divisors (70952382).

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

66084738 is a wasteful number, since it uses less digits than its factorization.

66084738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 66084738 is about 8129.2519951100. The cubic root of 66084738 is about 404.2968809231.

The spelling of 66084738 in words is "sixty-six million, eighty-four thousand, seven hundred thirty-eight".