3499640064 has 108 divisors (see below), whose sum is σ = 10188980256. Its totient is φ = 1155142656.

The previous prime is 3499640063. The next prime is 3499640083. The reversal of 3499640064 is 4600469943.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3499640063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 229939 + ... + 244685.

Almost surely, 2^3499640064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3499640064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5094490128).

3499640064 is an abundant number, since it is smaller than the sum of its proper divisors (6689340192).

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

3499640064 is a wasteful number, since it uses less digits than its factorization.

3499640064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14872 (or 14855 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 3499640064 is about 59157.7557383645. The cubic root of 3499640064 is about 1518.2424375970.

The spelling of 3499640064 in words is "three billion, four hundred ninety-nine million, six hundred forty thousand, sixty-four".