64334761 has 2 divisors, whose sum is σ = 64334762. Its totient is φ = 64334760.

The previous prime is 64334747. The next prime is 64334791. The reversal of 64334761 is 16743346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 414736 = 7995^2 + 644^2 .

It is a cyclic number.

It is not a de Polignac number, because 64334761 - 2²³ = 55946153 is a prime.

It is a super-2 number, since 2×64334761² = 8277922945854242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64334791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32167380 + 32167381.

It is an arithmetic number, because the mean of its divisors is an integer number (32167381).

Almost surely, 2^64334761 is an apocalyptic number.

It is an amenable number.

64334761 is a deficient number, since it is larger than the sum of its proper divisors (1).

64334761 is an equidigital number, since it uses as much as digits as its factorization.

64334761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 34.

The square root of 64334761 is about 8020.8952742197. The cubic root of 64334761 is about 400.6962062890.

The spelling of 64334761 in words is "sixty-four million, three hundred thirty-four thousand, seven hundred sixty-one".