621160087 has 2 divisors, whose sum is σ = 621160088. Its totient is φ = 621160086.

The previous prime is 621160079. The next prime is 621160091. The reversal of 621160087 is 780061126.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621160087 - 2³ = 621160079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621160097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310580043 + 310580044.

It is an arithmetic number, because the mean of its divisors is an integer number (310580044).

Almost surely, 2^621160087 is an apocalyptic number.

621160087 is a deficient number, since it is larger than the sum of its proper divisors (1).

621160087 is an equidigital number, since it uses as much as digits as its factorization.

621160087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 621160087 is about 24923.0834167845. The cubic root of 621160087 is about 853.2333994334.

The spelling of 621160087 in words is "six hundred twenty-one million, one hundred sixty thousand, eighty-seven".