63405361 has 4 divisors (see below), whose sum is σ = 63658224. Its totient is φ = 63152500.

The previous prime is 63405347. The next prime is 63405371. The reversal of 63405361 is 16350436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63405361 - 2²¹ = 61308209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63405371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126055 + ... + 126556.

It is an arithmetic number, because the mean of its divisors is an integer number (15914556).

Almost surely, 2^63405361 is an apocalyptic number.

It is an amenable number.

63405361 is a deficient number, since it is larger than the sum of its proper divisors (252863).

63405361 is a wasteful number, since it uses less digits than its factorization.

63405361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252862.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 63405361 is about 7962.7483320773. The cubic root of 63405361 is about 398.7573120648.

Adding to 63405361 its reverse (16350436), we get a palindrome (79755797).

The spelling of 63405361 in words is "sixty-three million, four hundred five thousand, three hundred sixty-one".