7648669 has 4 divisors (see below), whose sum is σ = 8741344. Its totient is φ = 6555996.

The previous prime is 7648649. The next prime is 7648687. The reversal of 7648669 is 9668467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9668467 = 271 ⋅35677.

It is a cyclic number.

It is not a de Polignac number, because 7648669 - 2⁵ = 7648637 is a prime.

It is a super-2 number, since 2×7648669² = 117004274943122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7648609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546327 + ... + 546340.

It is an arithmetic number, because the mean of its divisors is an integer number (2185336).

Almost surely, 2^7648669 is an apocalyptic number.

It is an amenable number.

7648669 is a deficient number, since it is larger than the sum of its proper divisors (1092675).

7648669 is a wasteful number, since it uses less digits than its factorization.

7648669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092674.

The product of its digits is 435456, while the sum is 46.

The square root of 7648669 is about 2765.6227146883. The cubic root of 7648669 is about 197.0283055173.

The spelling of 7648669 in words is "seven million, six hundred forty-eight thousand, six hundred sixty-nine".