66000738 has 32 divisors (see below), whose sum is σ = 133862400. Its totient is φ = 21692880.

The previous prime is 66000733. The next prime is 66000791. The reversal of 66000738 is 83700066.

66000738 is a modest number, since divided by 738 gives 660 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66000733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199233 + ... + 199563.

It is an arithmetic number, because the mean of its divisors is an integer number (4183200).

Almost surely, 2^66000738 is an apocalyptic number.

66000738 is an abundant number, since it is smaller than the sum of its proper divisors (67861662).

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

66000738 is a wasteful number, since it uses less digits than its factorization.

66000738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 66000738 is about 8124.0838252692. The cubic root of 66000738 is about 404.1255083370.

The spelling of 66000738 in words is "sixty-six million, seven hundred thirty-eight", and thus it is an aban number.