66739014 has 24 divisors (see below), whose sum is σ = 145357992. Its totient is φ = 22129920.

The previous prime is 66738979. The next prime is 66739019. The reversal of 66739014 is 41093766.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66739014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66739019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6132 + ... + 13079.

It is an arithmetic number, because the mean of its divisors is an integer number (6056583).

Almost surely, 2^66739014 is an apocalyptic number.

66739014 is an abundant number, since it is smaller than the sum of its proper divisors (78618978).

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

66739014 is a wasteful number, since it uses less digits than its factorization.

66739014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19412 (or 19409 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 66739014 is about 8169.3949592366. The cubic root of 66739014 is about 405.6267570435.

The spelling of 66739014 in words is "sixty-six million, seven hundred thirty-nine thousand, fourteen".