64434850 has 12 divisors (see below), whose sum is σ = 119848914. Its totient is φ = 25773920.

The previous prime is 64434817. The next prime is 64434859. The reversal of 64434850 is 5843446.

It can be written as a sum of positive squares in 3 ways, for example, as 24631369 + 39803481 = 4963^2 + 6309^2 .

It is not an unprimeable number, because it can be changed into a prime (64434859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644299 + ... + 644398.

Almost surely, 2^64434850 is an apocalyptic number.

64434850 is a deficient number, since it is larger than the sum of its proper divisors (55414064).

64434850 is a wasteful number, since it uses less digits than its factorization.

64434850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288709 (or 1288704 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 64434850 is about 8027.1321155192. The cubic root of 64434850 is about 400.9038934032.

The spelling of 64434850 in words is "sixty-four million, four hundred thirty-four thousand, eight hundred fifty".