107761991 has 2 divisors, whose sum is σ = 107761992. Its totient is φ = 107761990.

The previous prime is 107761967. The next prime is 107762027. The reversal of 107761991 is 199167701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 107761991 - 2¹⁴ = 107745607 is a prime.

It is a super-2 number, since 2×107761991² = 23225293408568162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (107761961) 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, 53880995 + 53880996.

It is an arithmetic number, because the mean of its divisors is an integer number (53880996).

Almost surely, 2^107761991 is an apocalyptic number.

107761991 is a deficient number, since it is larger than the sum of its proper divisors (1).

107761991 is an equidigital number, since it uses as much as digits as its factorization.

107761991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 41.

The square root of 107761991 is about 10380.8473160913. The cubic root of 107761991 is about 475.8702289061.

The spelling of 107761991 in words is "one hundred seven million, seven hundred sixty-one thousand, nine hundred ninety-one".