64143000 has 96 divisors (see below), whose sum is σ = 216833760. Its totient is φ = 17102400.

The previous prime is 64142987. The next prime is 64143011. The reversal of 64143000 is 34146.

It is a super-2 number, since 2×64143000² = 8228648898000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5437 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (2258685).

Almost surely, 2^64143000 is an apocalyptic number.

64143000 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 64143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108416880).

64143000 is an abundant number, since it is smaller than the sum of its proper divisors (152690760).

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

64143000 is a wasteful number, since it uses less digits than its factorization.

64143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154 (or 7137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 64143000 is about 8008.9325131381. The cubic root of 64143000 is about 400.2976950558.

Adding to 64143000 its reverse (34146), we get a palindrome (64177146).

The spelling of 64143000 in words is "sixty-four million, one hundred forty-three thousand".