64620684607 has 2 divisors, whose sum is σ = 64620684608. Its totient is φ = 64620684606.

The previous prime is 64620684599. The next prime is 64620684629. The reversal of 64620684607 is 70648602646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64620684607 - 2³ = 64620684599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64620684647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32310342303 + 32310342304.

It is an arithmetic number, because the mean of its divisors is an integer number (32310342304).

Almost surely, 2^64620684607 is an apocalyptic number.

64620684607 is a deficient number, since it is larger than the sum of its proper divisors (1).

64620684607 is an equidigital number, since it uses as much as digits as its factorization.

64620684607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 64620684607 in words is "sixty-four billion, six hundred twenty million, six hundred eighty-four thousand, six hundred seven".