3662421 has 32 divisors (see below), whose sum is σ = 6005760. Its totient is φ = 1938816.

The previous prime is 3662419. The next prime is 3662437. The reversal of 3662421 is 1242663.

3662421 = 200² + 201² + ... + 266².

It is not a de Polignac number, because 3662421 - 2¹ = 3662419 is a prime.

It is a super-3 number, since 3×3662421³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3662391 and 3662400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3662401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26665 + ... + 26801.

It is an arithmetic number, because the mean of its divisors is an integer number (187680).

Almost surely, 2^3662421 is an apocalyptic number.

It is an amenable number.

3662421 is a deficient number, since it is larger than the sum of its proper divisors (2343339).

3662421 is a wasteful number, since it uses less digits than its factorization.

3662421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233.

The product of its digits is 1728, while the sum is 24.

The square root of 3662421 is about 1913.7452808564. The cubic root of 3662421 is about 154.1426266224.

The spelling of 3662421 in words is "three million, six hundred sixty-two thousand, four hundred twenty-one".