64245405 has 32 divisors (see below), whose sum is σ = 117782784. Its totient is φ = 29293056.

The previous prime is 64245347. The next prime is 64245409. The reversal of 64245405 is 50454246.

It is not a de Polignac number, because 64245405 - 2⁶ = 64245341 is a prime.

It is a super-2 number, since 2×64245405² = 8254944127228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64245409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68097 + ... + 69033.

It is an arithmetic number, because the mean of its divisors is an integer number (3680712).

Almost surely, 2^64245405 is an apocalyptic number.

It is an amenable number.

64245405 is a deficient number, since it is larger than the sum of its proper divisors (53537379).

64245405 is a wasteful number, since it uses less digits than its factorization.

64245405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 64245405 is about 8015.3231375909. The cubic root of 64245405 is about 400.5106083371.

The spelling of 64245405 in words is "sixty-four million, two hundred forty-five thousand, four hundred five".