6478821401 has 8 divisors (see below), whose sum is σ = 7280548800. Its totient is φ = 5720430672.

The previous prime is 6478821383. The next prime is 6478821413. The reversal of 6478821401 is 1041288746.

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 6478821401 - 2⁶ = 6478821337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6478821451) 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, 10833851 + ... + 10834448.

It is an arithmetic number, because the mean of its divisors is an integer number (910068600).

Almost surely, 2^6478821401 is an apocalyptic number.

It is an amenable number.

6478821401 is a deficient number, since it is larger than the sum of its proper divisors (801727399).

6478821401 is a wasteful number, since it uses less digits than its factorization.

6478821401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21668335.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 6478821401 is about 80491.1262251933. The cubic root of 6478821401 is about 1864.2264664373.

The spelling of 6478821401 in words is "six billion, four hundred seventy-eight million, eight hundred twenty-one thousand, four hundred one".