7725663 has 24 divisors (see below), whose sum is σ = 12352080. Its totient is φ = 4613760.

The previous prime is 7725659. The next prime is 7725689. The reversal of 7725663 is 3665277.

It is a happy number.

It is not a de Polignac number, because 7725663 - 2² = 7725659 is a prime.

It is a super-3 number, since 3×7725663³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7724663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6693 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (514670).

Almost surely, 2^7725663 is an apocalyptic number.

7725663 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

7725663 is a deficient number, since it is larger than the sum of its proper divisors (4626417).

7725663 is a wasteful number, since it uses less digits than its factorization.

7725663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159 (or 1156 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 7725663 is about 2779.5076902214. The cubic root of 7725663 is about 197.6872165895.

The spelling of 7725663 in words is "seven million, seven hundred twenty-five thousand, six hundred sixty-three".