3521684 has 6 divisors (see below), whose sum is σ = 6162954. Its totient is φ = 1760840.

The previous prime is 3521677. The next prime is 3521689. The reversal of 3521684 is 4861253.

It can be written as a sum of positive squares in only one way, i.e., 2464900 + 1056784 = 1570^2 + 1028^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440207 + ... + 440214.

It is an arithmetic number, because the mean of its divisors is an integer number (1027159).

Almost surely, 2^3521684 is an apocalyptic number.

It is an amenable number.

3521684 is a deficient number, since it is larger than the sum of its proper divisors (2641270).

3521684 is a wasteful number, since it uses less digits than its factorization.

3521684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880425 (or 880423 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 3521684 is about 1876.6150377741. The cubic root of 3521684 is about 152.1423527901.

The spelling of 3521684 in words is "three million, five hundred twenty-one thousand, six hundred eighty-four".