66363549 has 8 divisors (see below), whose sum is σ = 101125440. Its totient is φ = 37922016.

The previous prime is 66363541. The next prime is 66363551. The reversal of 66363549 is 94536366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66363549 - 2³ = 66363541 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66363549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66363541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580064 + ... + 1580105.

It is an arithmetic number, because the mean of its divisors is an integer number (12640680).

Almost surely, 2^66363549 is an apocalyptic number.

It is an amenable number.

66363549 is a deficient number, since it is larger than the sum of its proper divisors (34761891).

66363549 is a wasteful number, since it uses less digits than its factorization.

66363549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160179.

The product of its digits is 349920, while the sum is 42.

The square root of 66363549 is about 8146.3825714240. The cubic root of 66363549 is about 404.8646583283.

The spelling of 66363549 in words is "sixty-six million, three hundred sixty-three thousand, five hundred forty-nine".