6720858 has 24 divisors (see below), whose sum is σ = 14802996. Its totient is φ = 2203200.

The previous prime is 6720841. The next prime is 6720887. The reversal of 6720858 is 8580276.

6720858 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in 2 ways, for example, as 5049009 + 1671849 = 2247^2 + 1293^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1963 + ... + 4158.

Almost surely, 2^6720858 is an apocalyptic number.

6720858 is an abundant number, since it is smaller than the sum of its proper divisors (8082138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720858 is a wasteful number, since it uses less digits than its factorization.

6720858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6190 (or 6187 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 6720858 is about 2592.4617644239. The cubic root of 6720858 is about 188.7157901832.

The spelling of 6720858 in words is "six million, seven hundred twenty thousand, eight hundred fifty-eight".