199740680 has 16 divisors (see below), whose sum is σ = 449416620. Its totient is φ = 79896256.

The previous prime is 199740649. The next prime is 199740691. The reversal of 199740680 is 86047991.

It can be written as a sum of positive squares in 2 ways, for example, as 194714116 + 5026564 = 13954^2 + 2242^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2496719 + ... + 2496798.

Almost surely, 2^199740680 is an apocalyptic number.

199740680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199740680 is an abundant number, since it is smaller than the sum of its proper divisors (249675940).

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

199740680 is a wasteful number, since it uses less digits than its factorization.

199740680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4993528 (or 4993524 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 199740680 is about 14132.9643033583. The cubic root of 199740680 is about 584.5506862311.

The spelling of 199740680 in words is "one hundred ninety-nine million, seven hundred forty thousand, six hundred eighty".