6720898 has 4 divisors (see below), whose sum is σ = 10081350. Its totient is φ = 3360448.

The previous prime is 6720887. The next prime is 6720911. The reversal of 6720898 is 8980276.

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., 3598609 + 3122289 = 1897^2 + 1767^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6720898.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680223 + ... + 1680226.

Almost surely, 2^6720898 is an apocalyptic number.

6720898 is a deficient number, since it is larger than the sum of its proper divisors (3360452).

6720898 is a wasteful number, since it uses less digits than its factorization.

6720898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360451.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 6720898 is about 2592.4694790875. The cubic root of 6720898 is about 188.7161645708.

The spelling of 6720898 in words is "six million, seven hundred twenty thousand, eight hundred ninety-eight".