3405387561 has 8 divisors (see below), whose sum is σ = 4540896864. Its totient is φ = 2270068320.

The previous prime is 3405387529. The next prime is 3405387569. The reversal of 3405387561 is 1657835043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3405387561 - 2⁵ = 3405387529 is a prime.

It is a super-2 number, since 2×3405387561² = 23193328881227057442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3405387569) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1525 + ... + 82541.

It is an arithmetic number, because the mean of its divisors is an integer number (567612108).

Almost surely, 2^3405387561 is an apocalyptic number.

It is an amenable number.

3405387561 is a deficient number, since it is larger than the sum of its proper divisors (1135509303).

3405387561 is a wasteful number, since it uses less digits than its factorization.

3405387561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95031.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 3405387561 is about 58355.6986163305. The cubic root of 3405387561 is about 1504.4884169020.

The spelling of 3405387561 in words is "three billion, four hundred five million, three hundred eighty-seven thousand, five hundred sixty-one".