3246641664 has 160 divisors (see below), whose sum is σ = 10153266816. Its totient is φ = 902430720.

The previous prime is 3246641647. The next prime is 3246641683. The reversal of 3246641664 is 4661466423.

It is a super-4 number, since 4×3246641664⁴ (a number of 39 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393744 + ... + 401904.

Almost surely, 2^3246641664 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 3246641664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5076633408).

3246641664 is an abundant number, since it is smaller than the sum of its proper divisors (6906625152).

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

3246641664 is an equidigital number, since it uses as much as digits as its factorization.

3246641664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8226 (or 8210 counting only the distinct ones).

The product of its digits is 497664, while the sum is 42.

The square root of 3246641664 is about 56979.3090867202. The cubic root of 3246641664 is about 1480.7376503029.

The spelling of 3246641664 in words is "three billion, two hundred forty-six million, six hundred forty-one thousand, six hundred sixty-four".