6405734136 has 32 divisors (see below), whose sum is σ = 16566555600. Its totient is φ = 2061615360.

The previous prime is 6405734131. The next prime is 6405734161. The reversal of 6405734136 is 6314375046.

It is a super-2 number, since 2×6405734136² = 82066859642231332992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6405734094 and 6405734103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405734131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4601125 + ... + 4602516.

Almost surely, 2^6405734136 is an apocalyptic number.

It is an amenable number.

6405734136 is an abundant number, since it is smaller than the sum of its proper divisors (10160821464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6405734136 is a wasteful number, since it uses less digits than its factorization.

6405734136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9203679 (or 9203675 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 6405734136 is about 80035.8303261733. The cubic root of 6405734136 is about 1857.1898575448.

The spelling of 6405734136 in words is "six billion, four hundred five million, seven hundred thirty-four thousand, one hundred thirty-six".