3573697644 has 60 divisors (see below), whose sum is σ = 10191666408. Its totient is φ = 1082937600.

The previous prime is 3573697643. The next prime is 3573697667. The reversal of 3573697644 is 4467963753.

It is a happy number.

3573697644 is a `hidden beast` number, since 3 + 573 + 6 + 9 + 7 + 64 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3573697643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 497797 + ... + 504924.

Almost surely, 2^3573697644 is an apocalyptic number.

It is an amenable number.

3573697644 is an abundant number, since it is smaller than the sum of its proper divisors (6617968764).

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

3573697644 is a wasteful number, since it uses less digits than its factorization.

3573697644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002748 (or 1002737 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The square root of 3573697644 is about 59780.4118754630. The cubic root of 3573697644 is about 1528.8771923642.

The spelling of 3573697644 in words is "three billion, five hundred seventy-three million, six hundred ninety-seven thousand, six hundred forty-four".