66940984 has 16 divisors (see below), whose sum is σ = 136924920. Its totient is φ = 30427680.

The previous prime is 66940969. The next prime is 66941041. The reversal of 66940984 is 48904966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380259 + ... + 380434.

Almost surely, 2^66940984 is an apocalyptic number.

It is an amenable number.

66940984 is an abundant number, since it is smaller than the sum of its proper divisors (69983936).

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

66940984 is a wasteful number, since it uses less digits than its factorization.

66940984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760710 (or 760706 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 66940984 is about 8181.7470017106. The cubic root of 66940984 is about 406.0355231118.

The spelling of 66940984 in words is "sixty-six million, nine hundred forty thousand, nine hundred eighty-four".