7872669 has 24 divisors (see below), whose sum is σ = 13682240. Its totient is φ = 4261248.

The previous prime is 7872661. The next prime is 7872671. The reversal of 7872669 is 9662787.

It is a happy number.

It is not a de Polignac number, because 7872669 - 2³ = 7872661 is a prime.

It is a super-2 number, since 2×7872669² = 123957834367122, which contains 22 as substring.

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

It is a d-powerful number, because it can be written as 7⁴ + 8⁷ + 7⁸ + 2¹³ + 6 + 6² + 9² .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872661) 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, 2092 + ... + 4485.

Almost surely, 2^7872669 is an apocalyptic number.

It is an amenable number.

7872669 is a deficient number, since it is larger than the sum of its proper divisors (5809571).

7872669 is a wasteful number, since it uses less digits than its factorization.

7872669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609 (or 6606 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 7872669 is about 2805.8276853720. The cubic root of 7872669 is about 198.9332284421.

The spelling of 7872669 in words is "seven million, eight hundred seventy-two thousand, six hundred sixty-nine".