66012850 has 24 divisors (see below), whose sum is σ = 123081408. Its totient is φ = 26341200.

The previous prime is 66012833. The next prime is 66012851. The reversal of 66012850 is 5821066.

It is not an unprimeable number, because it can be changed into a prime (66012851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22995 + ... + 25705.

It is an arithmetic number, because the mean of its divisors is an integer number (5128392).

Almost surely, 2^66012850 is an apocalyptic number.

66012850 is a deficient number, since it is larger than the sum of its proper divisors (57068558).

66012850 is a wasteful number, since it uses less digits than its factorization.

66012850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 66012850 is about 8124.8292289746. The cubic root of 66012850 is about 404.1502275998.

The spelling of 66012850 in words is "sixty-six million, twelve thousand, eight hundred fifty".