66670404 has 24 divisors (see below), whose sum is σ = 156014880. Its totient is φ = 22159104.

The previous prime is 66670327. The next prime is 66670421. The reversal of 66670404 is 40407666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3634 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (6500620).

Almost surely, 2^66670404 is an apocalyptic number.

It is an amenable number.

66670404 is an abundant number, since it is smaller than the sum of its proper divisors (89344476).

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

66670404 is a wasteful number, since it uses less digits than its factorization.

66670404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16099 (or 16097 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 66670404 is about 8165.1946700615. The cubic root of 66670404 is about 405.4877099687.

The spelling of 66670404 in words is "sixty-six million, six hundred seventy thousand, four hundred four".