66873252 has 12 divisors (see below), whose sum is σ = 156037616. Its totient is φ = 22291080.

The previous prime is 66873241. The next prime is 66873253. The reversal of 66873252 is 25237866.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66873252.

It is not an unprimeable number, because it can be changed into a prime (66873253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2786374 + ... + 2786397.

Almost surely, 2^66873252 is an apocalyptic number.

It is an amenable number.

66873252 is an abundant number, since it is smaller than the sum of its proper divisors (89164364).

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

66873252 is a wasteful number, since it uses less digits than its factorization.

66873252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5572778 (or 5572776 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 66873252 is about 8177.6067403611. The cubic root of 66873252 is about 405.8985324017.

It can be divided in two parts, 668 and 73252, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 66873252 in words is "sixty-six million, eight hundred seventy-three thousand, two hundred fifty-two".