7649143 has 2 divisors, whose sum is σ = 7649144. Its totient is φ = 7649142.

The previous prime is 7649137. The next prime is 7649177. The reversal of 7649143 is 3419467.

It is a happy number.

It is an a-pointer prime, because the next prime (7649177) can be obtained adding 7649143 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (3419467) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7649143 is a prime.

It is an Ulam number.

It is equal to p₅₁₇₆₈₇ and since 7649143 and 517687 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 7649099 and 7649108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7649113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824571 + 3824572.

It is an arithmetic number, because the mean of its divisors is an integer number (3824572).

Almost surely, 2^7649143 is an apocalyptic number.

7649143 is a deficient number, since it is larger than the sum of its proper divisors (1).

7649143 is an equidigital number, since it uses as much as digits as its factorization.

7649143 is an evil number, because the sum of its binary digits is even.

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

The square root of 7649143 is about 2765.7084083468. The cubic root of 7649143 is about 197.0323754842.

The spelling of 7649143 in words is "seven million, six hundred forty-nine thousand, one hundred forty-three".