3621047 has 4 divisors (see below), whose sum is σ = 3647616. Its totient is φ = 3594480.

The previous prime is 3621043. The next prime is 3621049. The reversal of 3621047 is 7401263.

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

It is a cyclic number.

It is not a de Polignac number, because 3621047 - 2² = 3621043 is a prime.

It is a super-2 number, since 2×3621047² = 26223962752418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621043) 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, 13079 + ... + 13352.

It is an arithmetic number, because the mean of its divisors is an integer number (911904).

Almost surely, 2^3621047 is an apocalyptic number.

3621047 is a deficient number, since it is larger than the sum of its proper divisors (26569).

3621047 is a wasteful number, since it uses less digits than its factorization.

3621047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26568.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 3621047 is about 1902.9048846435. The cubic root of 3621047 is about 153.5599824996.

The spelling of 3621047 in words is "three million, six hundred twenty-one thousand, forty-seven".