349417665 has 64 divisors (see below), whose sum is σ = 648000000. Its totient is φ = 178424064.

The previous prime is 349417631. The next prime is 349417669. The reversal of 349417665 is 566714943.

It is not a de Polignac number, because 349417665 - 2⁹ = 349417153 is a prime.

It is a super-2 number, since 2×349417665² = 244185409228104450, which contains 22 as substring.

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

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 349417665.

It is not an unprimeable number, because it can be changed into a prime (349417669) 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 63 ways as a sum of consecutive naturals, for example, 583036 + ... + 583634.

It is an arithmetic number, because the mean of its divisors is an integer number (10125000).

Almost surely, 2^349417665 is an apocalyptic number.

It is an amenable number.

349417665 is a deficient number, since it is larger than the sum of its proper divisors (298582335).

349417665 is a wasteful number, since it uses less digits than its factorization.

349417665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 785 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 349417665 is about 18692.7168972303. The cubic root of 349417665 is about 704.3388096970.

The spelling of 349417665 in words is "three hundred forty-nine million, four hundred seventeen thousand, six hundred sixty-five".