66863358 has 12 divisors (see below), whose sum is σ = 144870648. Its totient is φ = 22287780.

The previous prime is 66863353. The next prime is 66863359. The reversal of 66863358 is 85336866.

66863358 is a `hidden beast` number, since 6 + 6 + 8 + 633 + 5 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66863353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1857298 + ... + 1857333.

It is an arithmetic number, because the mean of its divisors is an integer number (12072554).

Almost surely, 2^66863358 is an apocalyptic number.

66863358 is an abundant number, since it is smaller than the sum of its proper divisors (78007290).

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

66863358 is a wasteful number, since it uses less digits than its factorization.

66863358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714639 (or 3714636 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 66863358 is about 8177.0017732663. The cubic root of 66863358 is about 405.8785136447.

The spelling of 66863358 in words is "sixty-six million, eight hundred sixty-three thousand, three hundred fifty-eight".