66343725 has 96 divisors (see below), whose sum is σ = 146816000. Its totient is φ = 28693440.

The previous prime is 66343709. The next prime is 66343759. The reversal of 66343725 is 52734366.

It is not a de Polignac number, because 66343725 - 2⁴ = 66343709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66343725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 89406 + ... + 90144.

Almost surely, 2^66343725 is an apocalyptic number.

It is an amenable number.

66343725 is an abundant number, since it is smaller than the sum of its proper divisors (80472275).

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

66343725 is a wasteful number, since it uses less digits than its factorization.

66343725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 773 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 66343725 is about 8145.1657441700. The cubic root of 66343725 is about 404.8243408326.

The spelling of 66343725 in words is "sixty-six million, three hundred forty-three thousand, seven hundred twenty-five".