6402613643 has 8 divisors (see below), whose sum is σ = 6532761456. Its totient is φ = 6272812000.

The previous prime is 6402613639. The next prime is 6402613663. The reversal of 6402613643 is 3463162046.

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 6402613643 - 2² = 6402613639 is a prime.

It is a super-2 number, since 2×6402613643² = 81986922923059462898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6402613663) 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, 49013 + ... + 123318.

It is an arithmetic number, because the mean of its divisors is an integer number (816595182).

Almost surely, 2^6402613643 is an apocalyptic number.

6402613643 is a deficient number, since it is larger than the sum of its proper divisors (130147813).

6402613643 is a wasteful number, since it uses less digits than its factorization.

6402613643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173085.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 6402613643 is about 80016.3336013342. Note that the first 3 decimals coincide. The cubic root of 6402613643 is about 1856.8882377184. Note that the first 3 decimals are identical.

Adding to 6402613643 its reverse (3463162046), we get a palindrome (9865775689).

The spelling of 6402613643 in words is "six billion, four hundred two million, six hundred thirteen thousand, six hundred forty-three".