103643987 has 2 divisors, whose sum is σ = 103643988. Its totient is φ = 103643986.

The previous prime is 103643983. The next prime is 103644029. The reversal of 103643987 is 789346301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 103643987 - 2² = 103643983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103643983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51821993 + 51821994.

It is an arithmetic number, because the mean of its divisors is an integer number (51821994).

Almost surely, 2^103643987 is an apocalyptic number.

103643987 is a deficient number, since it is larger than the sum of its proper divisors (1).

103643987 is an equidigital number, since it uses as much as digits as its factorization.

103643987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 103643987 is about 10180.5690901835. The cubic root of 103643987 is about 469.7297178449.

The spelling of 103643987 in words is "one hundred three million, six hundred forty-three thousand, nine hundred eighty-seven".