64834739 has 2 divisors, whose sum is σ = 64834740. Its totient is φ = 64834738.

The previous prime is 64834729. The next prime is 64834751. The reversal of 64834739 is 93743846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64834739 - 2²⁴ = 48057523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64834739.

It is not a weakly prime, because it can be changed into another prime (64834729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32417369 + 32417370.

It is an arithmetic number, because the mean of its divisors is an integer number (32417370).

Almost surely, 2^64834739 is an apocalyptic number.

64834739 is a deficient number, since it is larger than the sum of its proper divisors (1).

64834739 is an equidigital number, since it uses as much as digits as its factorization.

64834739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The square root of 64834739 is about 8052.0021733728. The cubic root of 64834739 is about 401.7315332492.

The spelling of 64834739 in words is "sixty-four million, eight hundred thirty-four thousand, seven hundred thirty-nine".