7663869 has 16 divisors (see below), whose sum is σ = 11500800. Its totient is φ = 5043168.

The previous prime is 7663829. The next prime is 7663871. The reversal of 7663869 is 9683667.

7663869 is a `hidden beast` number, since 7 + 6 + 638 + 6 + 9 = 666.

It is not a de Polignac number, because 7663869 - 2⁷ = 7663741 is a prime.

It is a super-2 number, since 2×7663869² = 117469776098322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

7663869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7663829) 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, 337 + ... + 3929.

It is an arithmetic number, because the mean of its divisors is an integer number (718800).

Almost surely, 2^7663869 is an apocalyptic number.

7663869 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

7663869 is a deficient number, since it is larger than the sum of its proper divisors (3836931).

7663869 is a wasteful number, since it uses less digits than its factorization.

7663869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681 (or 3675 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 7663869 is about 2768.3693756434. The cubic root of 7663869 is about 197.1587355561.

The spelling of 7663869 in words is "seven million, six hundred sixty-three thousand, eight hundred sixty-nine".