6905216401 has 4 divisors (see below), whose sum is σ = 6905660400. Its totient is φ = 6904772404.

The previous prime is 6905216387. The next prime is 6905216413. The reversal of 6905216401 is 1046125096.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6905216401 - 2⁵ = 6905216369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6905216471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197791 + ... + 230068.

It is an arithmetic number, because the mean of its divisors is an integer number (1726415100).

Almost surely, 2^6905216401 is an apocalyptic number.

It is an amenable number.

6905216401 is a deficient number, since it is larger than the sum of its proper divisors (443999).

6905216401 is a wasteful number, since it uses less digits than its factorization.

6905216401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443998.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 6905216401 is about 83097.6317412235. The cubic root of 6905216401 is about 1904.2578933305.

The spelling of 6905216401 in words is "six billion, nine hundred five million, two hundred sixteen thousand, four hundred one".