6406562641 has 8 divisors (see below), whose sum is σ = 6641616384. Its totient is φ = 6173283360.

The previous prime is 6406562627. The next prime is 6406562663. The reversal of 6406562641 is 1462656046.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6406562641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6406562594 and 6406562603.

It is not an unprimeable number, because it can be changed into a prime (6406562341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436261 + ... + 450706.

It is an arithmetic number, because the mean of its divisors is an integer number (830202048).

Almost surely, 2^6406562641 is an apocalyptic number.

It is an amenable number.

6406562641 is a deficient number, since it is larger than the sum of its proper divisors (235053743).

6406562641 is a wasteful number, since it uses less digits than its factorization.

6406562641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887231.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 6406562641 is about 80041.0059969264. The cubic root of 6406562641 is about 1857.2699225156.

The spelling of 6406562641 in words is "six billion, four hundred six million, five hundred sixty-two thousand, six hundred forty-one".