7620869 has 2 divisors, whose sum is σ = 7620870. Its totient is φ = 7620868.

The previous prime is 7620863. The next prime is 7620871. The reversal of 7620869 is 9680267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5943844 + 1677025 = 2438^2 + 1295^2 .

It is an emirp because it is prime and its reverse (9680267) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7620869 - 2¹⁶ = 7555333 is a prime.

It is a super-2 number, since 2×7620869² = 116155288630322, which contains 22 as substring.

Together with 7620871, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7620863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3810434 + 3810435.

It is an arithmetic number, because the mean of its divisors is an integer number (3810435).

Almost surely, 2^7620869 is an apocalyptic number.

It is an amenable number.

7620869 is a deficient number, since it is larger than the sum of its proper divisors (1).

7620869 is an equidigital number, since it uses as much as digits as its factorization.

7620869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 7620869 is about 2760.5921466236. The cubic root of 7620869 is about 196.7893081006.

The spelling of 7620869 in words is "seven million, six hundred twenty thousand, eight hundred sixty-nine".