6720426 has 12 divisors (see below), whose sum is σ = 14560962. Its totient is φ = 2240136.

The previous prime is 6720409. The next prime is 6720437. The reversal of 6720426 is 6240276.

It can be written as a sum of positive squares in only one way, i.e., 3426201 + 3294225 = 1851^2 + 1815^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6720426.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 186661 + ... + 186696.

Almost surely, 2^6720426 is an apocalyptic number.

6720426 is an abundant number, since it is smaller than the sum of its proper divisors (7840536).

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

6720426 is a wasteful number, since it uses less digits than its factorization.

6720426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373365 (or 373362 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 6720426 is about 2592.3784445948. The cubic root of 6720426 is about 188.7117467031.

The spelling of 6720426 in words is "six million, seven hundred twenty thousand, four hundred twenty-six".