64432845 has 12 divisors (see below), whose sum is σ = 111683676. Its totient is φ = 34364160.

The previous prime is 64432829. The next prime is 64432861. The reversal of 64432845 is 54823446.

64432845 is a `hidden beast` number, since 644 + 3 + 2 + 8 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (64432829) and next prime (64432861).

It can be written as a sum of positive squares in 2 ways, for example, as 26904969 + 37527876 = 5187^2 + 6126^2 .

It is not a de Polignac number, because 64432845 - 2⁴ = 64432829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 715876 + ... + 715965.

It is an arithmetic number, because the mean of its divisors is an integer number (9306973).

Almost surely, 2^64432845 is an apocalyptic number.

It is an amenable number.

64432845 is a deficient number, since it is larger than the sum of its proper divisors (47250831).

64432845 is a wasteful number, since it uses less digits than its factorization.

64432845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431852 (or 1431849 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 64432845 is about 8027.0072256103. The cubic root of 64432845 is about 400.8997350912.

It can be divided in two parts, 644 and 32845, that added together give a square (33489 = 183²).

The spelling of 64432845 in words is "sixty-four million, four hundred thirty-two thousand, eight hundred forty-five".