3692561 has 4 divisors (see below), whose sum is σ = 3719652. Its totient is φ = 3665472.

The previous prime is 3692551. The next prime is 3692567. The reversal of 3692561 is 1652963.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 1336336 = 1535^2 + 1156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3692561 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3692567) 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, 13340 + ... + 13613.

It is an arithmetic number, because the mean of its divisors is an integer number (929913).

Almost surely, 2^3692561 is an apocalyptic number.

It is an amenable number.

3692561 is a deficient number, since it is larger than the sum of its proper divisors (27091).

3692561 is a wasteful number, since it uses less digits than its factorization.

3692561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27090.

The product of its digits is 9720, while the sum is 32.

The square root of 3692561 is about 1921.6037572819. The cubic root of 3692561 is about 154.5643123785.

The spelling of 3692561 in words is "three million, six hundred ninety-two thousand, five hundred sixty-one".