66408934 has 8 divisors (see below), whose sum is σ = 99649008. Its totient is φ = 33192600.

The previous prime is 66408917. The next prime is 66408949. The reversal of 66408934 is 43980466.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5359 + ... + 12709.

It is an arithmetic number, because the mean of its divisors is an integer number (12456126).

Almost surely, 2^66408934 is an apocalyptic number.

66408934 is a deficient number, since it is larger than the sum of its proper divisors (33240074).

66408934 is a wasteful number, since it uses less digits than its factorization.

66408934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 66408934 is about 8149.1676875617. The cubic root of 66408934 is about 404.9569308465.

The spelling of 66408934 in words is "sixty-six million, four hundred eight thousand, nine hundred thirty-four".