7643253 has 8 divisors (see below), whose sum is σ = 10260000. Its totient is φ = 5061008.

The previous prime is 7643249. The next prime is 7643257. The reversal of 7643253 is 3523467.

It is an interprime number because it is at equal distance from previous prime (7643249) and next prime (7643257).

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 7643253 - 2² = 7643249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7643253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8103 + ... + 8996.

It is an arithmetic number, because the mean of its divisors is an integer number (1282500).

Almost surely, 2^7643253 is an apocalyptic number.

It is an amenable number.

7643253 is a deficient number, since it is larger than the sum of its proper divisors (2616747).

7643253 is a wasteful number, since it uses less digits than its factorization.

7643253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17251.

The product of its digits is 15120, while the sum is 30.

The square root of 7643253 is about 2764.6433766401. The cubic root of 7643253 is about 196.9817894820.

The spelling of 7643253 in words is "seven million, six hundred forty-three thousand, two hundred fifty-three".