63355340 has 48 divisors (see below), whose sum is σ = 142103808. Its totient is φ = 23669184.

The previous prime is 63355337. The next prime is 63355349. The reversal of 63355340 is 4355336.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (63355349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18179 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (2960496).

Almost surely, 2^63355340 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 63355340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71051904).

63355340 is an abundant number, since it is smaller than the sum of its proper divisors (78748468).

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

63355340 is a wasteful number, since it uses less digits than its factorization.

63355340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 29.

The square root of 63355340 is about 7959.6067742069. The cubic root of 63355340 is about 398.6524235257.

The spelling of 63355340 in words is "sixty-three million, three hundred fifty-five thousand, three hundred forty".