64432079 has 2 divisors, whose sum is σ = 64432080. Its totient is φ = 64432078.

The previous prime is 64432061. The next prime is 64432087. The reversal of 64432079 is 97023446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64432079 - 2¹² = 64427983 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64432019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32216039 + 32216040.

It is an arithmetic number, because the mean of its divisors is an integer number (32216040).

Almost surely, 2^64432079 is an apocalyptic number.

64432079 is a deficient number, since it is larger than the sum of its proper divisors (1).

64432079 is an equidigital number, since it uses as much as digits as its factorization.

64432079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 64432079 is about 8026.9595115461. The cubic root of 64432079 is about 400.8981464065.

It can be divided in two parts, 644 and 32079, that added together give a palindrome (32723).

The spelling of 64432079 in words is "sixty-four million, four hundred thirty-two thousand, seventy-nine".