64143702 has 48 divisors (see below), whose sum is σ = 162539520. Its totient is φ = 17899056.

The previous prime is 64143701. The next prime is 64143731. The reversal of 64143702 is 20734146.

64143702 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×64143702³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64143701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 502 + ... + 11337.

It is an arithmetic number, because the mean of its divisors is an integer number (3386240).

Almost surely, 2^64143702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64143702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81269760).

64143702 is an abundant number, since it is smaller than the sum of its proper divisors (98395818).

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

64143702 is a wasteful number, since it uses less digits than its factorization.

64143702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11897 (or 11894 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 64143702 is about 8008.9763390835. The cubic root of 64143702 is about 400.2991553760.

Adding to 64143702 its reverse (20734146), we get a palindrome (84877848).

The spelling of 64143702 in words is "sixty-four million, one hundred forty-three thousand, seven hundred two".