109701661 has 2 divisors, whose sum is σ = 109701662. Its totient is φ = 109701660.

The previous prime is 109701637. The next prime is 109701673. The reversal of 109701661 is 166107901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103917636 + 5784025 = 10194^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 109701661 - 2¹⁷ = 109570589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109701061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54850830 + 54850831.

It is an arithmetic number, because the mean of its divisors is an integer number (54850831).

Almost surely, 2^109701661 is an apocalyptic number.

It is an amenable number.

109701661 is a deficient number, since it is larger than the sum of its proper divisors (1).

109701661 is an equidigital number, since it uses as much as digits as its factorization.

109701661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 109701661 is about 10473.8560711898. The cubic root of 109701661 is about 478.7084215607.

The spelling of 109701661 in words is "one hundred nine million, seven hundred one thousand, six hundred sixty-one".