3604961 has 4 divisors (see below), whose sum is σ = 3729300. Its totient is φ = 3480624.

The previous prime is 3604943. The next prime is 3604963. The reversal of 3604961 is 1694063.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1694063 = 7 ⋅242009.

It can be written as a sum of positive squares in 2 ways, for example, as 1221025 + 2383936 = 1105^2 + 1544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3604961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 124309 = 3604961 / (3 + 6 + 0 + 4 + 9 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3604963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62126 + ... + 62183.

It is an arithmetic number, because the mean of its divisors is an integer number (932325).

Almost surely, 2^3604961 is an apocalyptic number.

It is an amenable number.

3604961 is a deficient number, since it is larger than the sum of its proper divisors (124339).

3604961 is a wasteful number, since it uses less digits than its factorization.

3604961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124338.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 3604961 is about 1898.6734843042. The cubic root of 3604961 is about 153.3322552959.

The spelling of 3604961 in words is "three million, six hundred four thousand, nine hundred sixty-one".