198677740 has 12 divisors (see below), whose sum is σ = 417223296. Its totient is φ = 79471088.

The previous prime is 198677723. The next prime is 198677741. The reversal of 198677740 is 47776891.

It is a super-3 number, since 3×198677740³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (198677741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4966924 + ... + 4966963.

It is an arithmetic number, because the mean of its divisors is an integer number (34768608).

Almost surely, 2^198677740 is an apocalyptic number.

198677740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198677740 is an abundant number, since it is smaller than the sum of its proper divisors (218545556).

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

198677740 is a wasteful number, since it uses less digits than its factorization.

198677740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9933896 (or 9933894 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 49.

The square root of 198677740 is about 14095.3091487913. The cubic root of 198677740 is about 583.5119264502.

The spelling of 198677740 in words is "one hundred ninety-eight million, six hundred seventy-seven thousand, seven hundred forty".