3612021 has 8 divisors (see below), whose sum is σ = 5504064. Its totient is φ = 2064000.

The previous prime is 3612019. The next prime is 3612023. The reversal of 3612021 is 1202163.

It is an interprime number because it is at equal distance from previous prime (3612019) and next prime (3612023).

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

It is not a de Polignac number, because 3612021 - 2¹ = 3612019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3612023) 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, 85980 + ... + 86021.

It is an arithmetic number, because the mean of its divisors is an integer number (688008).

Almost surely, 2^3612021 is an apocalyptic number.

It is an amenable number.

3612021 is a deficient number, since it is larger than the sum of its proper divisors (1892043).

3612021 is a wasteful number, since it uses less digits than its factorization.

3612021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172011.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3612021 is about 1900.5317676903. The cubic root of 3612021 is about 153.4322859493.

Adding to 3612021 its reverse (1202163), we get a palindrome (4814184).

The spelling of 3612021 in words is "three million, six hundred twelve thousand, twenty-one".