64143156 has 144 divisors (see below), whose sum is σ = 194890752. Its totient is φ = 16228800.

The previous prime is 64143137. The next prime is 64143169. The reversal of 64143156 is 65134146.

It is a super-2 number, since 2×64143156² = 8228688923280672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 303891 + ... + 304101.

It is an arithmetic number, because the mean of its divisors is an integer number (1353408).

Almost surely, 2^64143156 is an apocalyptic number.

64143156 is a gapful number since it is divisible by the number (66) 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 64143156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97445376).

64143156 is an abundant number, since it is smaller than the sum of its proper divisors (130747596).

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

64143156 is a wasteful number, since it uses less digits than its factorization.

64143156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 281 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 64143156 is about 8008.9422522578. The cubic root of 64143156 is about 400.2980195724.

The spelling of 64143156 in words is "sixty-four million, one hundred forty-three thousand, one hundred fifty-six".