64434761 has 4 divisors (see below), whose sum is σ = 64515024. Its totient is φ = 64354500.

The previous prime is 64434749. The next prime is 64434817. The reversal of 64434761 is 16743446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64434761 - 2¹⁸ = 64172617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64431761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38915 + ... + 40536.

It is an arithmetic number, because the mean of its divisors is an integer number (16128756).

Almost surely, 2^64434761 is an apocalyptic number.

It is an amenable number.

64434761 is a deficient number, since it is larger than the sum of its proper divisors (80263).

64434761 is an equidigital number, since it uses as much as digits as its factorization.

64434761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80262.

The product of its digits is 48384, while the sum is 35.

The square root of 64434761 is about 8027.1265718188. The cubic root of 64434761 is about 400.9037088216.

The spelling of 64434761 in words is "sixty-four million, four hundred thirty-four thousand, seven hundred sixty-one".