6750390 has 32 divisors (see below), whose sum is σ = 16402176. Its totient is φ = 1777760.

The previous prime is 6750329. The next prime is 6750397. The reversal of 6750390 is 930576.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6750397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1135 + ... + 3845.

It is an arithmetic number, because the mean of its divisors is an integer number (512568).

Almost surely, 2^6750390 is an apocalyptic number.

6750390 is an abundant number, since it is smaller than the sum of its proper divisors (9651786).

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

6750390 is a wasteful number, since it uses less digits than its factorization.

6750390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 6750390 is about 2598.1512658042. The cubic root of 6750390 is about 188.9917971861.

It can be divided in two parts, 6750 and 390, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 6750390 in words is "six million, seven hundred fifty thousand, three hundred ninety".