6641416 has 8 divisors (see below), whose sum is σ = 12452670. Its totient is φ = 3320704.

The previous prime is 6641399. The next prime is 6641419. The reversal of 6641416 is 6141466.

It can be written as a sum of positive squares in only one way, i.e., 3437316 + 3204100 = 1854^2 + 1790^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6641419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415081 + ... + 415096.

Almost surely, 2^6641416 is an apocalyptic number.

It is an amenable number.

6641416 is a deficient number, since it is larger than the sum of its proper divisors (5811254).

6641416 is a wasteful number, since it uses less digits than its factorization.

6641416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830183 (or 830179 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 6641416 is about 2577.0944879845. The cubic root of 6641416 is about 187.9692872720.

It can be divided in two parts, 66414 and 16, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 6641416 in words is "six million, six hundred forty-one thousand, four hundred sixteen".