7643149 has 8 divisors (see below), whose sum is σ = 8519040. Its totient is φ = 6814656.

The previous prime is 7643137. The next prime is 7643161. The reversal of 7643149 is 9413467.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7643137) and next prime (7643161).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7643149 - 2⁷ = 7643021 is a prime.

7643149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11509 + ... + 12154.

It is an arithmetic number, because the mean of its divisors is an integer number (1064880).

Almost surely, 2^7643149 is an apocalyptic number.

It is an amenable number.

7643149 is a deficient number, since it is larger than the sum of its proper divisors (875891).

7643149 is a wasteful number, since it uses less digits than its factorization.

7643149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23699.

The product of its digits is 18144, while the sum is 34.

The square root of 7643149 is about 2764.6245676402. The cubic root of 7643149 is about 196.9808960492.

The spelling of 7643149 in words is "seven million, six hundred forty-three thousand, one hundred forty-nine".