820614607 has 2 divisors, whose sum is σ = 820614608. Its totient is φ = 820614606.

The previous prime is 820614533. The next prime is 820614611. The reversal of 820614607 is 706416028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820614607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (820614647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410307303 + 410307304.

It is an arithmetic number, because the mean of its divisors is an integer number (410307304).

Almost surely, 2^820614607 is an apocalyptic number.

820614607 is a deficient number, since it is larger than the sum of its proper divisors (1).

820614607 is an equidigital number, since it uses as much as digits as its factorization.

820614607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 820614607 is about 28646.3716201546. The cubic root of 820614607 is about 936.2239519242.

It can be divided in two parts, 82061 and 4607, that added together give a palindrome (86668).

The spelling of 820614607 in words is "eight hundred twenty million, six hundred fourteen thousand, six hundred seven".