66020850 has 72 divisors (see below), whose sum is σ = 202725120. Its totient is φ = 15089760.

The previous prime is 66020831. The next prime is 66020873. The reversal of 66020850 is 5802066.

66020850 is a `hidden beast` number, since 6 + 602 + 0 + 8 + 50 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7330 + ... + 13629.

Almost surely, 2^66020850 is an apocalyptic number.

66020850 is an abundant number, since it is smaller than the sum of its proper divisors (136704270).

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

66020850 is a wasteful number, since it uses less digits than its factorization.

66020850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20984 (or 20976 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 66020850 is about 8125.3215320995. The cubic root of 66020850 is about 404.1665530638.

The spelling of 66020850 in words is "sixty-six million, twenty thousand, eight hundred fifty".