6406427513 has 8 divisors (see below), whose sum is σ = 6502776936. Its totient is φ = 6310310400.

The previous prime is 6406427491. The next prime is 6406427549. The reversal of 6406427513 is 3157246046.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 941078329 + 5465349184 = 30677^2 + 73928^2 .

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 6406427513 - 2¹⁶ = 6406361977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6406427813) 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, 2108 + ... + 113213.

It is an arithmetic number, because the mean of its divisors is an integer number (812847117).

Almost surely, 2^6406427513 is an apocalyptic number.

It is an amenable number.

6406427513 is a deficient number, since it is larger than the sum of its proper divisors (96349423).

6406427513 is a wasteful number, since it uses less digits than its factorization.

6406427513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116155.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 6406427513 is about 80040.1618751487. The cubic root of 6406427513 is about 1857.2568645027.

The spelling of 6406427513 in words is "six billion, four hundred six million, four hundred twenty-seven thousand, five hundred thirteen".