120005687 has 2 divisors, whose sum is σ = 120005688. Its totient is φ = 120005686.

The previous prime is 120005671. The next prime is 120005701. The reversal of 120005687 is 786500021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120005687 - 2⁴ = 120005671 is a prime.

It is a super-3 number, since 3×120005687³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120005987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60002843 + 60002844.

It is an arithmetic number, because the mean of its divisors is an integer number (60002844).

Almost surely, 2^120005687 is an apocalyptic number.

120005687 is a deficient number, since it is larger than the sum of its proper divisors (1).

120005687 is an equidigital number, since it uses as much as digits as its factorization.

120005687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 120005687 is about 10954.7107218767. The cubic root of 120005687 is about 493.2502066030.

The spelling of 120005687 in words is "one hundred twenty million, five thousand, six hundred eighty-seven".