6890725 has 12 divisors (see below), whose sum is σ = 8632260. Its totient is φ = 5456000.

The previous prime is 6890713. The next prime is 6890753. The reversal of 6890725 is 5270986.

It can be written as a sum of positive squares in 6 ways, for example, as 1292769 + 5597956 = 1137^2 + 2366^2 .

It is not a de Polignac number, because 6890725 - 2¹¹ = 6888677 is a prime.

It is a d-powerful number, because it can be written as 6 + 8⁷ + 9⁷ + 0 + 7⁴ + 2¹³ + 5 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1161 + ... + 3889.

It is an arithmetic number, because the mean of its divisors is an integer number (719355).

Almost surely, 2^6890725 is an apocalyptic number.

It is an amenable number.

6890725 is a deficient number, since it is larger than the sum of its proper divisors (1741535).

6890725 is a wasteful number, since it uses less digits than its factorization.

6890725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840 (or 2835 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 6890725 is about 2625.0190475499. The cubic root of 6890725 is about 190.2924858047.

The spelling of 6890725 in words is "six million, eight hundred ninety thousand, seven hundred twenty-five".