64260405 has 64 divisors (see below), whose sum is σ = 126086400. Its totient is φ = 30792960.

The previous prime is 64260401. The next prime is 64260439. The reversal of 64260405 is 50406246.

It is a happy number.

64260405 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 64260405 - 2² = 64260401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64260401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 161667 + ... + 162063.

It is an arithmetic number, because the mean of its divisors is an integer number (1970100).

Almost surely, 2^64260405 is an apocalyptic number.

It is an amenable number.

64260405 is a deficient number, since it is larger than the sum of its proper divisors (61825995).

64260405 is a wasteful number, since it uses less digits than its factorization.

64260405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 525 counting only the distinct ones).

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

The square root of 64260405 is about 8016.2587907327. The cubic root of 64260405 is about 400.5417762815.

The spelling of 64260405 in words is "sixty-four million, two hundred sixty thousand, four hundred five".