6401485 has 4 divisors (see below), whose sum is σ = 7681788. Its totient is φ = 5121184.

The previous prime is 6401477. The next prime is 6401497. The reversal of 6401485 is 5841046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5841046 = 2 ⋅2920523.

It can be written as a sum of positive squares in 2 ways, for example, as 1212201 + 5189284 = 1101^2 + 2278^2 .

It is a cyclic number.

It is not a de Polignac number, because 6401485 - 2³ = 6401477 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640144 + ... + 640153.

It is an arithmetic number, because the mean of its divisors is an integer number (1920447).

Almost surely, 2^6401485 is an apocalyptic number.

It is an amenable number.

6401485 is a deficient number, since it is larger than the sum of its proper divisors (1280303).

6401485 is a wasteful number, since it uses less digits than its factorization.

6401485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280302.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 6401485 is about 2530.1156100068. The cubic root of 6401485 is about 185.6779121495.

It can be divided in two parts, 6401 and 485, that added together give a palindrome (6886).

The spelling of 6401485 in words is "six million, four hundred one thousand, four hundred eighty-five".