2636404 has 6 divisors (see below), whose sum is σ = 4613714. Its totient is φ = 1318200.

The previous prime is 2636401. The next prime is 2636407. The reversal of 2636404 is 4046362.

It is an interprime number because it is at equal distance from previous prime (2636401) and next prime (2636407).

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 240100 = 1548^2 + 490^2 .

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 as a sum of consecutive naturals, namely, 329547 + ... + 329554.

2^2636404 is an apocalyptic number.

It is an amenable number.

2636404 is a deficient number, since it is larger than the sum of its proper divisors (1977310).

2636404 is a wasteful number, since it uses less digits than its factorization.

2636404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659105 (or 659103 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2636404 is about 1623.7007113381. The cubic root of 2636404 is about 138.1456838595.

The spelling of 2636404 in words is "two million, six hundred thirty-six thousand, four hundred four".