103689977 has 2 divisors, whose sum is σ = 103689978. Its totient is φ = 103689976.

The previous prime is 103689961. The next prime is 103689979. The reversal of 103689977 is 779986301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62267881 + 41422096 = 7891^2 + 6436^2 .

It is a cyclic number.

It is not a de Polignac number, because 103689977 - 2⁴ = 103689961 is a prime.

It is a super-2 number, since 2×103689977² = 21503222660521058, which contains 22 as substring.

Together with 103689979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103689979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51844988 + 51844989.

It is an arithmetic number, because the mean of its divisors is an integer number (51844989).

Almost surely, 2^103689977 is an apocalyptic number.

It is an amenable number.

103689977 is a deficient number, since it is larger than the sum of its proper divisors (1).

103689977 is an equidigital number, since it uses as much as digits as its factorization.

103689977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 103689977 is about 10182.8275542700. The cubic root of 103689977 is about 469.7991853745.

The spelling of 103689977 in words is "one hundred three million, six hundred eighty-nine thousand, nine hundred seventy-seven".