349490565 has 16 divisors (see below), whose sum is σ = 621316800. Its totient is φ = 186394896.

The previous prime is 349490563. The next prime is 349490593. The reversal of 349490565 is 565094943.

349490565 is a `hidden beast` number, since 3 + 49 + 49 + 0 + 565 = 666.

It is not a de Polignac number, because 349490565 - 2¹ = 349490563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 349490565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349490563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294275 + ... + 1294544.

It is an arithmetic number, because the mean of its divisors is an integer number (38832300).

Almost surely, 2^349490565 is an apocalyptic number.

It is an amenable number.

349490565 is a deficient number, since it is larger than the sum of its proper divisors (271826235).

349490565 is a wasteful number, since it uses less digits than its factorization.

349490565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588833 (or 2588827 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 349490565 is about 18694.6667528469. Note that the first 3 decimals coincide. The cubic root of 349490565 is about 704.3877890265.

The spelling of 349490565 in words is "three hundred forty-nine million, four hundred ninety thousand, five hundred sixty-five".