64413539 has 2 divisors, whose sum is σ = 64413540. Its totient is φ = 64413538.

The previous prime is 64413533. The next prime is 64413541. The reversal of 64413539 is 93531446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64413539 - 2⁴ = 64413523 is a prime.

It is a Sophie Germain prime.

Together with 64413541, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64413499 and 64413508.

It is not a weakly prime, because it can be changed into another prime (64413533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32206769 + 32206770.

It is an arithmetic number, because the mean of its divisors is an integer number (32206770).

Almost surely, 2^64413539 is an apocalyptic number.

64413539 is a deficient number, since it is larger than the sum of its proper divisors (1).

64413539 is an equidigital number, since it uses as much as digits as its factorization.

64413539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 64413539 is about 8025.8045702596. The cubic root of 64413539 is about 400.8596905899.

The spelling of 64413539 in words is "sixty-four million, four hundred thirteen thousand, five hundred thirty-nine".