6406468257 has 8 divisors (see below), whose sum is σ = 9762237376. Its totient is φ = 3660838992.

The previous prime is 6406468253. The next prime is 6406468283. The reversal of 6406468257 is 7528646046.

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

It is not a de Polignac number, because 6406468257 - 2² = 6406468253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6406468253) 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, 152534938 + ... + 152534979.

It is an arithmetic number, because the mean of its divisors is an integer number (1220279672).

Almost surely, 2^6406468257 is an apocalyptic number.

It is an amenable number.

6406468257 is a deficient number, since it is larger than the sum of its proper divisors (3355769119).

6406468257 is a wasteful number, since it uses less digits than its factorization.

6406468257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305069927.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The square root of 6406468257 is about 80040.4163969679. The cubic root of 6406468257 is about 1857.2608017939.

The spelling of 6406468257 in words is "six billion, four hundred six million, four hundred sixty-eight thousand, two hundred fifty-seven".