6998930820 has 576 divisors, whose sum is σ = 27528560640. Its totient is φ = 1443163392.

The previous prime is 6998930803. The next prime is 6998930837. The reversal of 6998930820 is 280398996.

It is an interprime number because it is at equal distance from previous prime (6998930803) and next prime (6998930837).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 31385229 + ... + 31385451.

It is an arithmetic number, because the mean of its divisors is an integer number (47792640).

Almost surely, 2^6998930820 is an apocalyptic number.

6998930820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6998930820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13764280320).

6998930820 is an abundant number, since it is smaller than the sum of its proper divisors (20529629820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6998930820 is a wasteful number, since it uses less digits than its factorization.

6998930820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 6998930820 is about 83659.6128367804. The cubic root of 6998930820 is about 1912.8337841104.

The spelling of 6998930820 in words is "six billion, nine hundred ninety-eight million, nine hundred thirty thousand, eight hundred twenty".