63366840 has 128 divisors (see below), whose sum is σ = 220492800. Its totient is φ = 16156800.

The previous prime is 63366781. The next prime is 63366851. The reversal of 63366840 is 4866336.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 63366795 and 63366804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23565 + ... + 26115.

It is an arithmetic number, because the mean of its divisors is an integer number (1722600).

Almost surely, 2^63366840 is an apocalyptic number.

63366840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63366840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110246400).

63366840 is an abundant number, since it is smaller than the sum of its proper divisors (157125960).

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

63366840 is a wasteful number, since it uses less digits than its factorization.

63366840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2594 (or 2584 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 63366840 is about 7960.3291389238. The cubic root of 63366840 is about 398.6765426476.

The spelling of 63366840 in words is "sixty-three million, three hundred sixty-six thousand, eight hundred forty".