199377601 has 8 divisors (see below), whose sum is σ = 200519208. Its totient is φ = 198240000.

The previous prime is 199377587. The next prime is 199377611. The reversal of 199377601 is 106773991.

It can be written as a sum of positive squares in 4 ways, for example, as 68046001 + 131331600 = 8249^2 + 11460^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199377601 - 2¹³ = 199369409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199377611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168231 + ... + 169411.

It is an arithmetic number, because the mean of its divisors is an integer number (25064901).

Almost surely, 2^199377601 is an apocalyptic number.

It is an amenable number.

199377601 is a deficient number, since it is larger than the sum of its proper divisors (1141607).

199377601 is a wasteful number, since it uses less digits than its factorization.

199377601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its (nonzero) digits is 71442, while the sum is 43.

The square root of 199377601 is about 14120.1133494034. The cubic root of 199377601 is about 584.1962820317.

The spelling of 199377601 in words is "one hundred ninety-nine million, three hundred seventy-seven thousand, six hundred one".