3405761649 has 12 divisors (see below), whose sum is σ = 5078125312. Its totient is φ = 2197265400.

The previous prime is 3405761581. The next prime is 3405761669. The reversal of 3405761649 is 9461675043.

3405761649 is a `hidden beast` number, since 34 + 0 + 576 + 1 + 6 + 49 = 666.

It is not a de Polignac number, because 3405761649 - 2⁸ = 3405761393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3405761669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6103237 + ... + 6103794.

Almost surely, 2^3405761649 is an apocalyptic number.

It is an amenable number.

3405761649 is a deficient number, since it is larger than the sum of its proper divisors (1672363663).

3405761649 is a wasteful number, since it uses less digits than its factorization.

3405761649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207068 (or 12207065 counting only the distinct ones).

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

The square root of 3405761649 is about 58358.9037679770. The cubic root of 3405761649 is about 1504.5435051453.

It can be divided in two parts, 340576 and 1649, that added together give a square (342225 = 585²).

The spelling of 3405761649 in words is "three billion, four hundred five million, seven hundred sixty-one thousand, six hundred forty-nine".