66253708 has 24 divisors (see below), whose sum is σ = 122074848. Its totient is φ = 31401216.

The previous prime is 66253699. The next prime is 66253723. The reversal of 66253708 is 80735266.

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, 7210 + ... + 13582.

It is an arithmetic number, because the mean of its divisors is an integer number (5086452).

Almost surely, 2^66253708 is an apocalyptic number.

It is an amenable number.

66253708 is a deficient number, since it is larger than the sum of its proper divisors (55821140).

66253708 is a wasteful number, since it uses less digits than its factorization.

66253708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6513 (or 6511 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 66253708 is about 8139.6380754921. The cubic root of 66253708 is about 404.6411656765.

The spelling of 66253708 in words is "sixty-six million, two hundred fifty-three thousand, seven hundred eight".