3617021 has 4 divisors (see below), whose sum is σ = 3628092. Its totient is φ = 3605952.

The previous prime is 3616999. The next prime is 3617027. The reversal of 3617021 is 1207163.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1207163 = 41 ⋅29443.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 3024121 = 770^2 + 1739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3617021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3616984 and 3617002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3617027) 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, 5030 + ... + 5703.

It is an arithmetic number, because the mean of its divisors is an integer number (907023).

Almost surely, 2^3617021 is an apocalyptic number.

It is an amenable number.

3617021 is a deficient number, since it is larger than the sum of its proper divisors (11071).

3617021 is a wasteful number, since it uses less digits than its factorization.

3617021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 3617021 is about 1901.8467340982. The cubic root of 3617021 is about 153.5030503696.

The spelling of 3617021 in words is "three million, six hundred seventeen thousand, twenty-one".