63820253 has 8 divisors (see below), whose sum is σ = 73583808. Its totient is φ = 54218304.

The previous prime is 63820249. The next prime is 63820279. The reversal of 63820253 is 35202836.

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

It is not a de Polignac number, because 63820253 - 2² = 63820249 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 (63820223) 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, 39551 + ... + 41132.

It is an arithmetic number, because the mean of its divisors is an integer number (9197976).

Almost surely, 2^63820253 is an apocalyptic number.

It is an amenable number.

63820253 is a deficient number, since it is larger than the sum of its proper divisors (9763555).

63820253 is a wasteful number, since it uses less digits than its factorization.

63820253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80803.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 63820253 is about 7988.7579134682. The cubic root of 63820253 is about 399.6251759604.

The spelling of 63820253 in words is "sixty-three million, eight hundred twenty thousand, two hundred fifty-three".