6889220551 has 4 divisors (see below), whose sum is σ = 7111453504. Its totient is φ = 6666987600.

The previous prime is 6889220549. The next prime is 6889220557. The reversal of 6889220551 is 1550229886.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6889220551 - 2¹ = 6889220549 is a prime.

It is a super-2 number, since 2×6889220551² = 94922719600641487202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6889220557) 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, 111116430 + ... + 111116491.

It is an arithmetic number, because the mean of its divisors is an integer number (1777863376).

Almost surely, 2^6889220551 is an apocalyptic number.

6889220551 is a deficient number, since it is larger than the sum of its proper divisors (222232953).

6889220551 is a wasteful number, since it uses less digits than its factorization.

6889220551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222232952.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 6889220551 is about 83001.3286098482. The cubic root of 6889220551 is about 1902.7863597142.

The spelling of 6889220551 in words is "six billion, eight hundred eighty-nine million, two hundred twenty thousand, five hundred fifty-one".