64424084761 has 3 divisors (see below), whose sum is σ = 64424338581. Its totient is φ = 64423830942.

The previous prime is 64424084713. The next prime is 64424084779. The reversal of 64424084761 is 16748042446.

The square root of 64424084761 is 253819.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 64424084761 - 2²³ = 64415696153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64424084161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 126910 + ... + 380728.

It is an arithmetic number, because the mean of its divisors is an integer number (21474779527).

Almost surely, 2^64424084761 is an apocalyptic number.

64424084761 is the 253819-th square number.

64424084761 is the 126910-th centered octagonal number.

It is an amenable number.

64424084761 is a deficient number, since it is larger than the sum of its proper divisors (253820).

64424084761 is an frugal number, since it uses more digits than its factorization.

64424084761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507638 (or 253819 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 64424084761 in words is "sixty-four billion, four hundred twenty-four million, eighty-four thousand, seven hundred sixty-one".