3405305665 has 32 divisors (see below), whose sum is σ = 4264634880. Its totient is φ = 2608429824.

The previous prime is 3405305653. The next prime is 3405305677. The reversal of 3405305665 is 5665035043.

3405305665 = T₃₆₆ + T₃₆₇ + ... + T₂₇₃₅.

It is an interprime number because it is at equal distance from previous prime (3405305653) and next prime (3405305677).

It is a cyclic number.

It is not a de Polignac number, because 3405305665 - 2⁵ = 3405305633 is a prime.

It is a super-2 number, since 2×3405305665² = 23192213344162184450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2666007 + ... + 2667283.

It is an arithmetic number, because the mean of its divisors is an integer number (133269840).

Almost surely, 2^3405305665 is an apocalyptic number.

It is an amenable number.

3405305665 is a deficient number, since it is larger than the sum of its proper divisors (859329215).

3405305665 is a wasteful number, since it uses less digits than its factorization.

3405305665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 162000, while the sum is 37.

The square root of 3405305665 is about 58354.9969154313. The cubic root of 3405305665 is about 1504.4763563490.

The spelling of 3405305665 in words is "three billion, four hundred five million, three hundred five thousand, six hundred sixty-five".