66836253 has 8 divisors (see below), whose sum is σ = 97216416. Its totient is φ = 40506800.

The previous prime is 66836249. The next prime is 66836261. The reversal of 66836253 is 35263866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66836253 - 2² = 66836249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66836153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012638 + ... + 1012703.

It is an arithmetic number, because the mean of its divisors is an integer number (12152052).

Almost surely, 2^66836253 is an apocalyptic number.

It is an amenable number.

66836253 is a deficient number, since it is larger than the sum of its proper divisors (30380163).

66836253 is a wasteful number, since it uses less digits than its factorization.

66836253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025355.

The product of its digits is 155520, while the sum is 39.

The square root of 66836253 is about 8175.3442129368. The cubic root of 66836253 is about 405.8236613591.

The spelling of 66836253 in words is "sixty-six million, eight hundred thirty-six thousand, two hundred fifty-three".