64207432 has 16 divisors (see below), whose sum is σ = 123643260. Its totient is φ = 31235904.

The previous prime is 64207411. The next prime is 64207439. The reversal of 64207432 is 23470246.

It can be written as a sum of positive squares in 2 ways, for example, as 60310756 + 3896676 = 7766^2 + 1974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64207432.

It is not an unprimeable number, because it can be changed into a prime (64207439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108163 + ... + 108754.

Almost surely, 2^64207432 is an apocalyptic number.

It is an amenable number.

64207432 is a deficient number, since it is larger than the sum of its proper divisors (59435828).

64207432 is a wasteful number, since it uses less digits than its factorization.

64207432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216960 (or 216956 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 64207432 is about 8012.9540120982. The cubic root of 64207432 is about 400.4316839548.

Adding to 64207432 its reverse (23470246), we get a palindrome (87677678).

The spelling of 64207432 in words is "sixty-four million, two hundred seven thousand, four hundred thirty-two".