6456438085 has 8 divisors (see below), whose sum is σ = 7749981216. Its totient is φ = 5163646800.

The previous prime is 6456438073. The next prime is 6456438091. The reversal of 6456438085 is 5808346546.

It is a happy number.

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

It is not a de Polignac number, because 6456438085 - 2⁷ = 6456437957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168891 + ... + 203560.

It is an arithmetic number, because the mean of its divisors is an integer number (968747652).

Almost surely, 2^6456438085 is an apocalyptic number.

It is an amenable number.

6456438085 is a deficient number, since it is larger than the sum of its proper divisors (1293543131).

6456438085 is a wasteful number, since it uses less digits than its factorization.

6456438085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375923.

The product of its (nonzero) digits is 2764800, while the sum is 49.

The square root of 6456438085 is about 80351.9637905633. The cubic root of 6456438085 is about 1862.0771188922.

The spelling of 6456438085 in words is "six billion, four hundred fifty-six million, four hundred thirty-eight thousand, eighty-five".