120685757 has 2 divisors, whose sum is σ = 120685758. Its totient is φ = 120685756.

The previous prime is 120685711. The next prime is 120685769. The reversal of 120685757 is 757586021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93915481 + 26770276 = 9691^2 + 5174^2 .

It is a cyclic number.

It is not a de Polignac number, because 120685757 - 2¹⁶ = 120620221 is a prime.

It is a super-3 number, since 3×120685757³ (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 (120685787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60342878 + 60342879.

It is an arithmetic number, because the mean of its divisors is an integer number (60342879).

Almost surely, 2^120685757 is an apocalyptic number.

It is an amenable number.

120685757 is a deficient number, since it is larger than the sum of its proper divisors (1).

120685757 is an equidigital number, since it uses as much as digits as its factorization.

120685757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 120685757 is about 10985.7069412942. The cubic root of 120685757 is about 494.1801986473.

The spelling of 120685757 in words is "one hundred twenty million, six hundred eighty-five thousand, seven hundred fifty-seven".