4065400605 has 64 divisors (see below), whose sum is σ = 7804108800. Its totient is φ = 1767951360.

The previous prime is 4065400601. The next prime is 4065400639. The reversal of 4065400605 is 5060045604.

4065400605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4065400605 - 2² = 4065400601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065400601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 181461 + ... + 202629.

It is an arithmetic number, because the mean of its divisors is an integer number (121939200).

Almost surely, 2^4065400605 is an apocalyptic number.

It is an amenable number.

4065400605 is a deficient number, since it is larger than the sum of its proper divisors (3738708195).

4065400605 is a wasteful number, since it uses less digits than its factorization.

4065400605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 4065400605 is about 63760.4940774458. The cubic root of 4065400605 is about 1596.0057407567.

The spelling of 4065400605 in words is "four billion, sixty-five million, four hundred thousand, six hundred five".