199604745 has 12 divisors (see below), whose sum is σ = 345981636. Its totient is φ = 106455840.

The previous prime is 199604719. The next prime is 199604759. The reversal of 199604745 is 547406991.

It can be written as a sum of positive squares in 2 ways, for example, as 42653961 + 156950784 = 6531^2 + 12528^2 .

It is not a de Polignac number, because 199604745 - 2¹⁸ = 199342601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4435661 = 199604745 / (1 + 9 + 9 + 6 + 0 + 4 + 7 + 4 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 199604745.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2217786 + ... + 2217875.

It is an arithmetic number, because the mean of its divisors is an integer number (28831803).

Almost surely, 2^199604745 is an apocalyptic number.

199604745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199604745 is a deficient number, since it is larger than the sum of its proper divisors (146376891).

199604745 is a wasteful number, since it uses less digits than its factorization.

199604745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435672 (or 4435669 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 199604745 is about 14128.1543380585. The cubic root of 199604745 is about 584.4180493704.

The spelling of 199604745 in words is "one hundred ninety-nine million, six hundred four thousand, seven hundred forty-five".