511206673 has 2 divisors, whose sum is σ = 511206674. Its totient is φ = 511206672.

The previous prime is 511206617. The next prime is 511206679. The reversal of 511206673 is 376602115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 493372944 + 17833729 = 22212^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 511206673 - 2²¹ = 509109521 is a prime.

It is a super-2 number, since 2×511206673² = 522664525039457858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (511206679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255603336 + 255603337.

It is an arithmetic number, because the mean of its divisors is an integer number (255603337).

Almost surely, 2^511206673 is an apocalyptic number.

It is an amenable number.

511206673 is a deficient number, since it is larger than the sum of its proper divisors (1).

511206673 is an equidigital number, since it uses as much as digits as its factorization.

511206673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 511206673 is about 22609.8799864130. The cubic root of 511206673 is about 799.5865952616.

Adding to 511206673 its reverse (376602115), we get a palindrome (887808788).

The spelling of 511206673 in words is "five hundred eleven million, two hundred six thousand, six hundred seventy-three".