7640219 has 2 divisors, whose sum is σ = 7640220. Its totient is φ = 7640218.

The previous prime is 7640183. The next prime is 7640221. The reversal of 7640219 is 9120467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7640219 - 2¹⁶ = 7574683 is a prime.

It is a super-2 number, since 2×7640219² = 116745892735922, which contains 22 as substring.

Together with 7640221, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7640191 and 7640200.

It is not a weakly prime, because it can be changed into another prime (7640249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820109 + 3820110.

It is an arithmetic number, because the mean of its divisors is an integer number (3820110).

Almost surely, 2^7640219 is an apocalyptic number.

7640219 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640219 is an equidigital number, since it uses as much as digits as its factorization.

7640219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7640219 is about 2764.0946076428. The cubic root of 7640219 is about 196.9557219666.

The spelling of 7640219 in words is "seven million, six hundred forty thousand, two hundred nineteen".