6738658 has 4 divisors (see below), whose sum is σ = 10107990. Its totient is φ = 3369328.

The previous prime is 6738649. The next prime is 6738689. The reversal of 6738658 is 8568376.

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., 5004169 + 1734489 = 2237^2 + 1317^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1684663 + ... + 1684666.

Almost surely, 2^6738658 is an apocalyptic number.

6738658 is a deficient number, since it is larger than the sum of its proper divisors (3369332).

6738658 is a wasteful number, since it uses less digits than its factorization.

6738658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369331.

The product of its digits is 241920, while the sum is 43.

The square root of 6738658 is about 2595.8925247398. The cubic root of 6738658 is about 188.8822461075.

It can be divided in two parts, 6738 and 658, that added together give a square (7396 = 86²).

The spelling of 6738658 in words is "six million, seven hundred thirty-eight thousand, six hundred fifty-eight".