64432455 has 16 divisors (see below), whose sum is σ = 103778304. Its totient is φ = 34135200.

The previous prime is 64432451. The next prime is 64432463. The reversal of 64432455 is 55423446.

It is not a de Polignac number, because 64432455 - 2² = 64432451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64432451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11959 + ... + 16488.

It is an arithmetic number, because the mean of its divisors is an integer number (6486144).

Almost surely, 2^64432455 is an apocalyptic number.

64432455 is a deficient number, since it is larger than the sum of its proper divisors (39345849).

64432455 is a wasteful number, since it uses less digits than its factorization.

64432455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28606.

The product of its digits is 57600, while the sum is 33.

The square root of 64432455 is about 8026.9829325843. The cubic root of 64432455 is about 400.8989262324.

Subtracting from 64432455 its reverse (55423446), we obtain a palindrome (9009009).

The spelling of 64432455 in words is "sixty-four million, four hundred thirty-two thousand, four hundred fifty-five".