207480509 has 2 divisors, whose sum is σ = 207480510. Its totient is φ = 207480508.

The previous prime is 207480503. The next prime is 207480517. The reversal of 207480509 is 905084702.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193627225 + 13853284 = 13915^2 + 3722^2 .

It is a cyclic number.

It is not a de Polignac number, because 207480509 - 2⁸ = 207480253 is a prime.

It is a super-2 number, since 2×207480509² = 86096323229798162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (207480503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103740254 + 103740255.

It is an arithmetic number, because the mean of its divisors is an integer number (103740255).

Almost surely, 2^207480509 is an apocalyptic number.

It is an amenable number.

207480509 is a deficient number, since it is larger than the sum of its proper divisors (1).

207480509 is an equidigital number, since it uses as much as digits as its factorization.

207480509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 207480509 is about 14404.1837325133. The cubic root of 207480509 is about 592.0055364180.

The spelling of 207480509 in words is "two hundred seven million, four hundred eighty thousand, five hundred nine".