6780434 has 4 divisors (see below), whose sum is σ = 10170654. Its totient is φ = 3390216.

The previous prime is 6780427. The next prime is 6780439. The reversal of 6780434 is 4340876.

It is a happy number.

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., 3900625 + 2879809 = 1975^2 + 1697^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6780434.

It is not an unprimeable number, because it can be changed into a prime (6780439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695107 + ... + 1695110.

Almost surely, 2^6780434 is an apocalyptic number.

6780434 is a deficient number, since it is larger than the sum of its proper divisors (3390220).

6780434 is a wasteful number, since it uses less digits than its factorization.

6780434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390219.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 6780434 is about 2603.9266502726. The cubic root of 6780434 is about 189.2717645418.

It can be divided in two parts, 678043 and 4, that multiplied together give a palindrome (2712172).

The spelling of 6780434 in words is "six million, seven hundred eighty thousand, four hundred thirty-four".