120641687 has 2 divisors, whose sum is σ = 120641688. Its totient is φ = 120641686.

The previous prime is 120641681. The next prime is 120641743. The reversal of 120641687 is 786146021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120641687 - 2⁴ = 120641671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120641681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60320843 + 60320844.

It is an arithmetic number, because the mean of its divisors is an integer number (60320844).

Almost surely, 2^120641687 is an apocalyptic number.

120641687 is a deficient number, since it is larger than the sum of its proper divisors (1).

120641687 is an equidigital number, since it uses as much as digits as its factorization.

120641687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 120641687 is about 10983.7009700738. The cubic root of 120641687 is about 494.1200391794.

The spelling of 120641687 in words is "one hundred twenty million, six hundred forty-one thousand, six hundred eighty-seven".