6899558401 has 4 divisors (see below), whose sum is σ = 6938103600. Its totient is φ = 6861013204.

The previous prime is 6899558399. The next prime is 6899558411. The reversal of 6899558401 is 1048559986.

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 6899558401 - 2¹ = 6899558399 is a prime.

It is a super-2 number, since 2×6899558401² = 95207812257619353602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6899558411) 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, 19272331 + ... + 19272688.

It is an arithmetic number, because the mean of its divisors is an integer number (1734525900).

Almost surely, 2^6899558401 is an apocalyptic number.

It is an amenable number.

6899558401 is a deficient number, since it is larger than the sum of its proper divisors (38545199).

6899558401 is a wasteful number, since it uses less digits than its factorization.

6899558401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38545198.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The square root of 6899558401 is about 83063.5804730328. The cubic root of 6899558401 is about 1903.7376472526.

The spelling of 6899558401 in words is "six billion, eight hundred ninety-nine million, five hundred fifty-eight thousand, four hundred one".