64433334 has 48 divisors (see below), whose sum is σ = 153128448. Its totient is φ = 18013968.

The previous prime is 64433333. The next prime is 64433359. The reversal of 64433334 is 43333446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64433333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11487 + ... + 16149.

It is an arithmetic number, because the mean of its divisors is an integer number (3190176).

Almost surely, 2^64433334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64433334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76564224).

64433334 is an abundant number, since it is smaller than the sum of its proper divisors (88695114).

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

64433334 is a wasteful number, since it uses less digits than its factorization.

64433334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729 (or 4722 counting only the distinct ones).

The product of its digits is 31104, while the sum is 30.

The square root of 64433334 is about 8027.0376852236. The cubic root of 64433334 is about 400.9007492710.

The spelling of 64433334 in words is "sixty-four million, four hundred thirty-three thousand, three hundred thirty-four".