64026405 has 24 divisors (see below), whose sum is σ = 111165912. Its totient is φ = 34089984.

The previous prime is 64026401. The next prime is 64026407. The reversal of 64026405 is 50462046.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18948609 + 45077796 = 4353^2 + 6714^2 .

It is not a de Polignac number, because 64026405 - 2² = 64026401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64026401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48717 + ... + 50013.

It is an arithmetic number, because the mean of its divisors is an integer number (4631913).

Almost surely, 2^64026405 is an apocalyptic number.

It is an amenable number.

64026405 is a deficient number, since it is larger than the sum of its proper divisors (47139507).

64026405 is a wasteful number, since it uses less digits than its factorization.

64026405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2402 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 64026405 is about 8001.6501423144. The cubic root of 64026405 is about 400.0550028530.

The spelling of 64026405 in words is "sixty-four million, twenty-six thousand, four hundred five".