66867652 has 12 divisors (see below), whose sum is σ = 119508480. Its totient is φ = 32722376.

The previous prime is 66867641. The next prime is 66867677. The reversal of 66867652 is 25676866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177652 + ... + 178027.

It is an arithmetic number, because the mean of its divisors is an integer number (9959040).

Almost surely, 2^66867652 is an apocalyptic number.

It is an amenable number.

66867652 is a deficient number, since it is larger than the sum of its proper divisors (52640828).

66867652 is a wasteful number, since it uses less digits than its factorization.

66867652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355730 (or 355728 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 66867652 is about 8177.2643347271. The cubic root of 66867652 is about 405.8872020359.

The spelling of 66867652 in words is "sixty-six million, eight hundred sixty-seven thousand, six hundred fifty-two".