6641738 has 4 divisors (see below), whose sum is σ = 9962610. Its totient is φ = 3320868.

The previous prime is 6641729. The next prime is 6641753. The reversal of 6641738 is 8371466.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4959529 + 1682209 = 2227^2 + 1297^2 .

It is a super-2 number, since 2×6641738² = 88225367321288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6641698 and 6641707.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1660433 + ... + 1660436.

Almost surely, 2^6641738 is an apocalyptic number.

6641738 is a deficient number, since it is larger than the sum of its proper divisors (3320872).

6641738 is a wasteful number, since it uses less digits than its factorization.

6641738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320871.

The product of its digits is 24192, while the sum is 35.

The square root of 6641738 is about 2577.1569606836. The cubic root of 6641738 is about 187.9723250344.

The spelling of 6641738 in words is "six million, six hundred forty-one thousand, seven hundred thirty-eight".