63344540 has 48 divisors (see below), whose sum is σ = 154913472. Its totient is φ = 21305856.

The previous prime is 63344539. The next prime is 63344569. The reversal of 63344540 is 4544336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3152 + ... + 11688.

It is an arithmetic number, because the mean of its divisors is an integer number (3227364).

Almost surely, 2^63344540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63344540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77456736).

63344540 is an abundant number, since it is smaller than the sum of its proper divisors (91568932).

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

63344540 is a wasteful number, since it uses less digits than its factorization.

63344540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606 (or 8604 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 63344540 is about 7958.9283198179. The cubic root of 63344540 is about 398.6297698665.

Adding to 63344540 its reverse (4544336), we get a palindrome (67888876).

The spelling of 63344540 in words is "sixty-three million, three hundred forty-four thousand, five hundred forty".