66763338 has 32 divisors (see below), whose sum is σ = 137073600. Its totient is φ = 21670656.

The previous prime is 66763337. The next prime is 66763349. The reversal of 66763338 is 83336766.

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 66763338.

It is not an unprimeable number, because it can be changed into a prime (66763331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39168 + ... + 40836.

It is an arithmetic number, because the mean of its divisors is an integer number (4283550).

Almost surely, 2^66763338 is an apocalyptic number.

66763338 is an abundant number, since it is smaller than the sum of its proper divisors (70310262).

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

66763338 is a wasteful number, since it uses less digits than its factorization.

66763338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its digits is 326592, while the sum is 42.

The square root of 66763338 is about 8170.8835507551. The cubic root of 66763338 is about 405.6760299062.

The spelling of 66763338 in words is "sixty-six million, seven hundred sixty-three thousand, three hundred thirty-eight".