261970003 has 2 divisors, whose sum is σ = 261970004. Its totient is φ = 261970002.

The previous prime is 261969991. The next prime is 261970019. The reversal of 261970003 is 300079162.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261970003 is a prime.

It is not a weakly prime, because it can be changed into another prime (261970703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130985001 + 130985002.

It is an arithmetic number, because the mean of its divisors is an integer number (130985002).

Almost surely, 2^261970003 is an apocalyptic number.

261970003 is a deficient number, since it is larger than the sum of its proper divisors (1).

261970003 is an equidigital number, since it uses as much as digits as its factorization.

261970003 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 28.

The square root of 261970003 is about 16185.4874192902. The cubic root of 261970003 is about 639.8583695387.

The spelling of 261970003 in words is "two hundred sixty-one million, nine hundred seventy thousand, three".