3690449864640 has 2016 divisors, whose sum is σ = 16828897333248. Its totient is φ = 761177088000.

The previous prime is 3690449864639. The next prime is 3690449864659. The reversal of 3690449864640 is 464689440963.

3690449864640 is a `hidden beast` number, since 3 + 6 + 90 + 4 + 4 + 9 + 86 + 464 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 8005314010 + ... + 8005314470.

It is an arithmetic number, because the mean of its divisors is an integer number (8347667328).

Almost surely, 2^{3690449864640} is an apocalyptic number.

3690449864640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3690449864640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8414448666624).

3690449864640 is an abundant number, since it is smaller than the sum of its proper divisors (13138447468608).

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

3690449864640 is a wasteful number, since it uses less digits than its factorization.

3690449864640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 107495424, while the sum is 63.

The spelling of 3690449864640 in words is "three trillion, six hundred ninety billion, four hundred forty-nine million, eight hundred sixty-four thousand, six hundred forty".