108277661 has 2 divisors, whose sum is σ = 108277662. Its totient is φ = 108277660.

The previous prime is 108277633. The next prime is 108277681. The reversal of 108277661 is 166772801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95922436 + 12355225 = 9794^2 + 3515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108277661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108277601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54138830 + 54138831.

It is an arithmetic number, because the mean of its divisors is an integer number (54138831).

Almost surely, 2^108277661 is an apocalyptic number.

It is an amenable number.

108277661 is a deficient number, since it is larger than the sum of its proper divisors (1).

108277661 is an equidigital number, since it uses as much as digits as its factorization.

108277661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 108277661 is about 10405.6552412618. The cubic root of 108277661 is about 476.6280768690.

The spelling of 108277661 in words is "one hundred eight million, two hundred seventy-seven thousand, six hundred sixty-one".