6548405397 has 16 divisors (see below), whose sum is σ = 8823816000. Its totient is φ = 4319360000.

The previous prime is 6548405393. The next prime is 6548405411. The reversal of 6548405397 is 7935048456.

6548405397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6548405397 - 2² = 6548405393 is a prime.

It is a super-2 number, since 2×6548405397² = 85763226486917455218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6548405393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478354 + ... + 491852.

It is an arithmetic number, because the mean of its divisors is an integer number (551488500).

Almost surely, 2^6548405397 is an apocalyptic number.

It is an amenable number.

6548405397 is a deficient number, since it is larger than the sum of its proper divisors (2275410603).

6548405397 is a wasteful number, since it uses less digits than its factorization.

6548405397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15204.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The square root of 6548405397 is about 80922.2181912977. The cubic root of 6548405397 is about 1870.8767845456.

The spelling of 6548405397 in words is "six billion, five hundred forty-eight million, four hundred five thousand, three hundred ninety-seven".