7636401 has 6 divisors (see below), whose sum is σ = 11030370. Its totient is φ = 5090928.

The previous prime is 7636397. The next prime is 7636403. The reversal of 7636401 is 1046367.

7636401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7420176 + 216225 = 2724^2 + 465^2 .

It is not a de Polignac number, because 7636401 - 2² = 7636397 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7636403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424236 + ... + 424253.

It is an arithmetic number, because the mean of its divisors is an integer number (1838395).

Almost surely, 2^7636401 is an apocalyptic number.

It is an amenable number.

7636401 is a deficient number, since it is larger than the sum of its proper divisors (3393969).

7636401 is a wasteful number, since it uses less digits than its factorization.

7636401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848495 (or 848492 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7636401 is about 2763.4038792764. The cubic root of 7636401 is about 196.9229086733.

The spelling of 7636401 in words is "seven million, six hundred thirty-six thousand, four hundred one".