6401436 has 12 divisors (see below), whose sum is σ = 14936712. Its totient is φ = 2133808.

The previous prime is 6401419. The next prime is 6401459. The reversal of 6401436 is 6341046.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266715 + ... + 266738.

It is an arithmetic number, because the mean of its divisors is an integer number (1244726).

Almost surely, 2^6401436 is an apocalyptic number.

It is an amenable number.

6401436 is an abundant number, since it is smaller than the sum of its proper divisors (8535276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6401436 is a wasteful number, since it uses less digits than its factorization.

6401436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533460 (or 533458 counting only the distinct ones).

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

The square root of 6401436 is about 2530.1059266363. The cubic root of 6401436 is about 185.6774383927.

The spelling of 6401436 in words is "six million, four hundred one thousand, four hundred thirty-six".