64746791 has 2 divisors, whose sum is σ = 64746792. Its totient is φ = 64746790.

The previous prime is 64746751. The next prime is 64746809. The reversal of 64746791 is 19764746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64746791 - 2¹⁸ = 64484647 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 (64746701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32373395 + 32373396.

It is an arithmetic number, because the mean of its divisors is an integer number (32373396).

Almost surely, 2^64746791 is an apocalyptic number.

64746791 is a deficient number, since it is larger than the sum of its proper divisors (1).

64746791 is an equidigital number, since it uses as much as digits as its factorization.

64746791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 44.

The square root of 64746791 is about 8046.5390696870. The cubic root of 64746791 is about 401.5498021118.

The spelling of 64746791 in words is "sixty-four million, seven hundred forty-six thousand, seven hundred ninety-one".