2635401 has 4 divisors (see below), whose sum is σ = 3513872. Its totient is φ = 1756932.

The previous prime is 2635387. The next prime is 2635411. The reversal of 2635401 is 1045362.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2635401 - 2¹⁰ = 2634377 is a prime.

It is a D-number.

It is a Duffinian number.

2635401 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2635411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439231 + ... + 439236.

It is an arithmetic number, because the mean of its divisors is an integer number (878468).

2^2635401 is an apocalyptic number.

It is an amenable number.

2635401 is a deficient number, since it is larger than the sum of its proper divisors (878471).

2635401 is an equidigital number, since it uses as much as digits as its factorization.

2635401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878470.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2635401 is about 1623.3918196172. The cubic root of 2635401 is about 138.1281628099.

The spelling of 2635401 in words is "two million, six hundred thirty-five thousand, four hundred one".