699299820 has 72 divisors (see below), whose sum is σ = 2213449056. Its totient is φ = 178371072.

The previous prime is 699299773. The next prime is 699299831. The reversal of 699299820 is 28992996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80317 + ... + 88596.

It is an arithmetic number, because the mean of its divisors is an integer number (30742348).

Almost surely, 2^699299820 is an apocalyptic number.

699299820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

699299820 is an abundant number, since it is smaller than the sum of its proper divisors (1514149236).

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

699299820 is a wasteful number, since it uses less digits than its factorization.

699299820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168951 (or 168946 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 54.

The square root of 699299820 is about 26444.2776418642. The cubic root of 699299820 is about 887.6078588743.

The spelling of 699299820 in words is "six hundred ninety-nine million, two hundred ninety-nine thousand, eight hundred twenty".