6455697408 has 392 divisors, whose sum is σ = 20628425088. Its totient is φ = 2014543872.

The previous prime is 6455697349. The next prime is 6455697461. The reversal of 6455697408 is 8047965546.

6455697408 is a `hidden beast` number, since 6 + 4 + 5 + 569 + 74 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 137355241 + ... + 137355287.

Almost surely, 2^6455697408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6455697408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10314212544).

6455697408 is an abundant number, since it is smaller than the sum of its proper divisors (14172727680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6455697408 is an frugal number, since it uses more digits than its factorization.

6455697408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The square root of 6455697408 is about 80347.3547044332. The cubic root of 6455697408 is about 1862.0059108763.

The spelling of 6455697408 in words is "six billion, four hundred fifty-five million, six hundred ninety-seven thousand, four hundred eight".