7725906 has 12 divisors (see below), whose sum is σ = 16739502. Its totient is φ = 2575296.

The previous prime is 7725881. The next prime is 7725911. The reversal of 7725906 is 6095277.

It can be written as a sum of positive squares in only one way, i.e., 7700625 + 25281 = 2775^2 + 159^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214591 + ... + 214626.

Almost surely, 2^7725906 is an apocalyptic number.

7725906 is an abundant number, since it is smaller than the sum of its proper divisors (9013596).

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

7725906 is a wasteful number, since it uses less digits than its factorization.

7725906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429225 (or 429222 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 7725906 is about 2779.5514026548. The cubic root of 7725906 is about 197.6892892267.

The spelling of 7725906 in words is "seven million, seven hundred twenty-five thousand, nine hundred six".