647406352461 has 8 divisors (see below), whose sum is σ = 941681967264. Its totient is φ = 392367486320.

The previous prime is 647406352451. The next prime is 647406352477. The reversal of 647406352461 is 164253604746.

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

It is a cyclic number.

It is not a de Polignac number, because 647406352461 - 2¹⁷ = 647406221389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 647406352461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647406352451) 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, 9809187126 + ... + 9809187191.

It is an arithmetic number, because the mean of its divisors is an integer number (117710245908).

Almost surely, 2^647406352461 is an apocalyptic number.

It is an amenable number.

647406352461 is a deficient number, since it is larger than the sum of its proper divisors (294275614803).

647406352461 is a wasteful number, since it uses less digits than its factorization.

647406352461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19618374331.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 647406352461 in words is "six hundred forty-seven billion, four hundred six million, three hundred fifty-two thousand, four hundred sixty-one".