2636421 has 16 divisors (see below), whose sum is σ = 3863040. Its totient is φ = 1591920.

The previous prime is 2636407. The next prime is 2636437. The reversal of 2636421 is 1246362.

It is not a de Polignac number, because 2636421 - 2⁶ = 2636357 is a prime.

It is a super-3 number, since 3×2636421³ = 54975038424433339383, which contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2636391 and 2636400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2636401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (241440).

2^2636421 is an apocalyptic number.

It is an amenable number.

2636421 is a deficient number, since it is larger than the sum of its proper divisors (1226619).

2636421 is a wasteful number, since it uses less digits than its factorization.

2636421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056.

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

The square root of 2636421 is about 1623.7059462846. The cubic root of 2636421 is about 138.1459807881.

The spelling of 2636421 in words is "two million, six hundred thirty-six thousand, four hundred twenty-one".