63041640 has 64 divisors (see below), whose sum is σ = 191972160. Its totient is φ = 16558080.

The previous prime is 63041603. The next prime is 63041647. The reversal of 63041640 is 4614036.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 63041640.

It is not an unprimeable number, because it can be changed into a prime (63041647) 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, 4120 + ... + 11960.

It is an arithmetic number, because the mean of its divisors is an integer number (2999565).

Almost surely, 2^63041640 is an apocalyptic number.

63041640 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 63041640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95986080).

63041640 is an abundant number, since it is smaller than the sum of its proper divisors (128930520).

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

63041640 is a wasteful number, since it uses less digits than its factorization.

63041640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922 (or 7918 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 63041640 is about 7939.8765733480. The cubic root of 63041640 is about 397.9933670603.

Adding to 63041640 its reverse (4614036), we get a palindrome (67655676).

The spelling of 63041640 in words is "sixty-three million, forty-one thousand, six hundred forty".