63381000 has 128 divisors (see below), whose sum is σ = 203448960. Its totient is φ = 16416000.

The previous prime is 63380987. The next prime is 63381023. The reversal of 63381000 is 18336.

It is a super-2 number, since 2×63381000² = 8034302322000000, which contains 22 as substring.

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, 110715 + ... + 111285.

It is an arithmetic number, because the mean of its divisors is an integer number (1589445).

Almost surely, 2^63381000 is an apocalyptic number.

63381000 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 63381000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101724480).

63381000 is an abundant number, since it is smaller than the sum of its proper divisors (140067960).

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

63381000 is a wasteful number, since it uses less digits than its factorization.

63381000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 63381000 is about 7961.2184997022. The cubic root of 63381000 is about 398.7062366190.

Adding to 63381000 its reverse (18336), we get a palindrome (63399336).

The spelling of 63381000 in words is "sixty-three million, three hundred eighty-one thousand".