3581012 has 6 divisors (see below), whose sum is σ = 6266778. Its totient is φ = 1790504.

The previous prime is 3581003. The next prime is 3581021. The reversal of 3581012 is 2101853.

It is an interprime number because it is at equal distance from previous prime (3581003) and next prime (3581021).

It can be written as a sum of positive squares in only one way, i.e., 2033476 + 1547536 = 1426^2 + 1244^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447623 + ... + 447630.

It is an arithmetic number, because the mean of its divisors is an integer number (1044463).

Almost surely, 2^3581012 is an apocalyptic number.

It is an amenable number.

3581012 is a deficient number, since it is larger than the sum of its proper divisors (2685766).

3581012 is a wasteful number, since it uses less digits than its factorization.

3581012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895257 (or 895255 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 3581012 is about 1892.3562032556. The cubic root of 3581012 is about 152.9919542382.

Adding to 3581012 its reverse (2101853), we get a palindrome (5682865).

The spelling of 3581012 in words is "three million, five hundred eighty-one thousand, twelve".