63420253 has 8 divisors (see below), whose sum is σ = 69261696. Its totient is φ = 57716400.

The previous prime is 63420239. The next prime is 63420263. The reversal of 63420253 is 35202436.

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 63420253 - 2¹³ = 63412061 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 (63420263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33433 + ... + 35278.

It is an arithmetic number, because the mean of its divisors is an integer number (8657712).

Almost surely, 2^63420253 is an apocalyptic number.

It is an amenable number.

63420253 is a deficient number, since it is larger than the sum of its proper divisors (5841443).

63420253 is a wasteful number, since it uses less digits than its factorization.

63420253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68795.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 63420253 is about 7963.6833814511. The cubic root of 63420253 is about 398.7885282950.

Adding to 63420253 its reverse (35202436), we get a palindrome (98622689).

The spelling of 63420253 in words is "sixty-three million, four hundred twenty thousand, two hundred fifty-three".