6638354 has 4 divisors (see below), whose sum is σ = 9957534. Its totient is φ = 3319176.

The previous prime is 6638341. The next prime is 6638363. The reversal of 6638354 is 4538366.

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., 3523129 + 3115225 = 1877^2 + 1765^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659587 + ... + 1659590.

Almost surely, 2^6638354 is an apocalyptic number.

6638354 is a deficient number, since it is larger than the sum of its proper divisors (3319180).

6638354 is a wasteful number, since it uses less digits than its factorization.

6638354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319179.

The product of its digits is 51840, while the sum is 35.

The square root of 6638354 is about 2576.5003396080. The cubic root of 6638354 is about 187.9403953191.

The spelling of 6638354 in words is "six million, six hundred thirty-eight thousand, three hundred fifty-four".