7643137 has 2 divisors, whose sum is σ = 7643138. Its totient is φ = 7643136.

The previous prime is 7643131. The next prime is 7643161. The reversal of 7643137 is 7313467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4198401 + 3444736 = 2049^2 + 1856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7643137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7643099 and 7643108.

It is not a weakly prime, because it can be changed into another prime (7643131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821568 + 3821569.

It is an arithmetic number, because the mean of its divisors is an integer number (3821569).

It is a Proth number, since it is equal to 933 ⋅ 2¹³ + 1 and 933 < 2¹³.

Almost surely, 2^7643137 is an apocalyptic number.

It is an amenable number.

7643137 is a deficient number, since it is larger than the sum of its proper divisors (1).

7643137 is an equidigital number, since it uses as much as digits as its factorization.

7643137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 31.

The square root of 7643137 is about 2764.6223973628. The cubic root of 7643137 is about 196.9807929602.

The spelling of 7643137 in words is "seven million, six hundred forty-three thousand, one hundred thirty-seven".