647427524405 has 8 divisors (see below), whose sum is σ = 778349100984. Its totient is φ = 516984638400.

The previous prime is 647427524369. The next prime is 647427524407. The reversal of 647427524405 is 504425724746.

647427524405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 228191236 + 647199333169 = 15106^2 + 804487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 647427524405 - 2³⁴ = 630247655221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647427524407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119669666 + ... + 119675075.

It is an arithmetic number, because the mean of its divisors is an integer number (97293637623).

Almost surely, 2^647427524405 is an apocalyptic number.

It is an amenable number.

647427524405 is a deficient number, since it is larger than the sum of its proper divisors (130921576579).

647427524405 is a wasteful number, since it uses less digits than its factorization.

647427524405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239345287.

The product of its (nonzero) digits is 7526400, while the sum is 50.

The spelling of 647427524405 in words is "six hundred forty-seven billion, four hundred twenty-seven million, five hundred twenty-four thousand, four hundred five".