8725646 has 16 divisors (see below), whose sum is σ = 13480368. Its totient is φ = 4233600.

The previous prime is 8725643. The next prime is 8725657. The reversal of 8725646 is 6465278.

It is a happy number.

It is a super-2 number, since 2×8725646² = 152273796234632, which contains 22 as substring.

It is a d-powerful number, because it can be written as 8⁵ + 7² + 2²³ + 5³ + 6⁵ + 4⁷ + 6⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8725643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20516 + ... + 20936.

It is an arithmetic number, because the mean of its divisors is an integer number (842523).

Almost surely, 2^8725646 is an apocalyptic number.

8725646 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

8725646 is a deficient number, since it is larger than the sum of its proper divisors (4754722).

8725646 is a wasteful number, since it uses less digits than its factorization.

8725646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 80640, while the sum is 38.

The square root of 8725646 is about 2953.9204457805. The cubic root of 8725646 is about 205.8729068063.

The spelling of 8725646 in words is "eight million, seven hundred twenty-five thousand, six hundred forty-six".