66499100 has 36 divisors (see below), whose sum is σ = 147037464. Its totient is φ = 26095680.

The previous prime is 66499093. The next prime is 66499127. The reversal of 66499100 is 199466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 974 + ... + 11573.

It is an arithmetic number, because the mean of its divisors is an integer number (4084374).

Almost surely, 2^66499100 is an apocalyptic number.

It is an amenable number.

66499100 is an abundant number, since it is smaller than the sum of its proper divisors (80538364).

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

66499100 is a wasteful number, since it uses less digits than its factorization.

66499100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12614 (or 12607 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 66499100 is about 8154.6980324228. The cubic root of 66499100 is about 405.1401232359.

The spelling of 66499100 in words is "sixty-six million, four hundred ninety-nine thousand, one hundred".