66607828 has 24 divisors (see below), whose sum is σ = 135044672. Its totient is φ = 28154304.

The previous prime is 66607813. The next prime is 66607837. The reversal of 66607828 is 82870666.

It is a congruent number.

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, 14250 + ... + 18337.

Almost surely, 2^66607828 is an apocalyptic number.

It is an amenable number.

66607828 is an abundant number, since it is smaller than the sum of its proper divisors (68436844).

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

66607828 is a wasteful number, since it uses less digits than its factorization.

66607828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32671 (or 32669 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 66607828 is about 8161.3618961543. The cubic root of 66607828 is about 405.3608083749.

The spelling of 66607828 in words is "sixty-six million, six hundred seven thousand, eight hundred twenty-eight".