355243664 has 20 divisors (see below), whose sum is σ = 695102460. Its totient is φ = 175862400.

The previous prime is 355243643. The next prime is 355243673. The reversal of 355243664 is 466342553.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 262699264 + 92544400 = 16208^2 + 9620^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108299 + ... + 111530.

It is an arithmetic number, because the mean of its divisors is an integer number (34755123).

Almost surely, 2^355243664 is an apocalyptic number.

It is an amenable number.

355243664 is a deficient number, since it is larger than the sum of its proper divisors (339858796).

355243664 is a wasteful number, since it uses less digits than its factorization.

355243664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219938 (or 219932 counting only the distinct ones).

The product of its digits is 259200, while the sum is 38.

The square root of 355243664 is about 18847.9087434124. The cubic root of 355243664 is about 708.2318391266.

The spelling of 355243664 in words is "three hundred fifty-five million, two hundred forty-three thousand, six hundred sixty-four".