66862885 has 8 divisors (see below), whose sum is σ = 82404216. Its totient is φ = 52044480.

The previous prime is 66862883. The next prime is 66862897. The reversal of 66862885 is 58826866.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34304449 + 32558436 = 5857^2 + 5706^2 .

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

It is not a de Polignac number, because 66862885 - 2¹ = 66862883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66862883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180526 + ... + 180895.

It is an arithmetic number, because the mean of its divisors is an integer number (10300527).

Almost surely, 2^66862885 is an apocalyptic number.

It is an amenable number.

66862885 is a deficient number, since it is larger than the sum of its proper divisors (15541331).

66862885 is a wasteful number, since it uses less digits than its factorization.

66862885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361463.

The product of its digits is 1105920, while the sum is 49.

The square root of 66862885 is about 8176.9728506337. The cubic root of 66862885 is about 405.8775565635.

The spelling of 66862885 in words is "sixty-six million, eight hundred sixty-two thousand, eight hundred eighty-five".