3644297412 has 96 divisors (see below), whose sum is σ = 10644721920. Its totient is φ = 946176000.

The previous prime is 3644297387. The next prime is 3644297417. The reversal of 3644297412 is 2147924463.

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

It is not an unprimeable number, because it can be changed into a prime (3644297417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2589 + ... + 85412.

It is an arithmetic number, because the mean of its divisors is an integer number (110882520).

Almost surely, 2^3644297412 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 3644297412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5322360960).

3644297412 is an abundant number, since it is smaller than the sum of its proper divisors (7000424508).

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

3644297412 is a wasteful number, since it uses less digits than its factorization.

3644297412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88061 (or 88059 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 3644297412 is about 60368.0164656749. The cubic root of 3644297412 is about 1538.8794642904.

The spelling of 3644297412 in words is "three billion, six hundred forty-four million, two hundred ninety-seven thousand, four hundred twelve".