3621012 has 12 divisors (see below), whose sum is σ = 8449056. Its totient is φ = 1207000.

The previous prime is 3621011. The next prime is 3621031. The reversal of 3621012 is 2101263.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×3621012² = 26223455808288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3620982 and 3621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3621011) 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, 150864 + ... + 150887.

It is an arithmetic number, because the mean of its divisors is an integer number (704088).

Almost surely, 2^3621012 is an apocalyptic number.

It is an amenable number.

3621012 is an abundant number, since it is smaller than the sum of its proper divisors (4828044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3621012 is a wasteful number, since it uses less digits than its factorization.

3621012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301758 (or 301756 counting only the distinct ones).

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

The square root of 3621012 is about 1902.8956881553. The cubic root of 3621012 is about 153.5594877424.

Adding to 3621012 its reverse (2101263), we get a palindrome (5722275).

The spelling of 3621012 in words is "three million, six hundred twenty-one thousand, twelve".