3605997 has 4 divisors (see below), whose sum is σ = 4808000. Its totient is φ = 2403996.

The previous prime is 3605969. The next prime is 3605999. The reversal of 3605997 is 7995063.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7995063 = 3 ⋅2665021.

It is not a de Polignac number, because 3605997 - 2⁷ = 3605869 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600997 + ... + 601002.

It is an arithmetic number, because the mean of its divisors is an integer number (1202000).

Almost surely, 2^3605997 is an apocalyptic number.

It is an amenable number.

3605997 is a deficient number, since it is larger than the sum of its proper divisors (1202003).

3605997 is a wasteful number, since it uses less digits than its factorization.

3605997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202002.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 3605997 is about 1898.9462867601. The cubic root of 3605997 is about 153.3469421864.

The spelling of 3605997 in words is "three million, six hundred five thousand, nine hundred ninety-seven".