13620620087 has 2 divisors, whose sum is σ = 13620620088. Its totient is φ = 13620620086.

The previous prime is 13620620081. The next prime is 13620620107. The reversal of 13620620087 is 78002602631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13620620087 - 2⁶ = 13620620023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13620620081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810310043 + 6810310044.

It is an arithmetic number, because the mean of its divisors is an integer number (6810310044).

Almost surely, 2^13620620087 is an apocalyptic number.

13620620087 is a deficient number, since it is larger than the sum of its proper divisors (1).

13620620087 is an equidigital number, since it uses as much as digits as its factorization.

13620620087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 13620620087 in words is "thirteen billion, six hundred twenty million, six hundred twenty thousand, eighty-seven".