2662421 has 8 divisors (see below), whose sum is σ = 2836800. Its totient is φ = 2490048.

The previous prime is 2662399. The next prime is 2662453. The reversal of 2662421 is 1242662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2662421 - 2¹⁰ = 2661397 is a prime.

It is a super-4 number, since 4×2662421⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2990 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (354600).

2^2662421 is an apocalyptic number.

It is an amenable number.

2662421 is a deficient number, since it is larger than the sum of its proper divisors (174379).

2662421 is a wasteful number, since it uses less digits than its factorization.

2662421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003.

The product of its digits is 1152, while the sum is 23.

The square root of 2662421 is about 1631.6926793977. The cubic root of 2662421 is about 138.5986212571.

The spelling of 2662421 in words is "two million, six hundred sixty-two thousand, four hundred twenty-one".