515468066 has 4 divisors (see below), whose sum is σ = 773202102. Its totient is φ = 257734032.

The previous prime is 515468059. The next prime is 515468071. The reversal of 515468066 is 660864515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660864515 = 5 ⋅132172903.

It can be written as a sum of positive squares in only one way, i.e., 476767225 + 38700841 = 21835^2 + 6221^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128867015 + ... + 128867018.

Almost surely, 2^515468066 is an apocalyptic number.

515468066 is a deficient number, since it is larger than the sum of its proper divisors (257734036).

515468066 is a wasteful number, since it uses less digits than its factorization.

515468066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257734035.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 515468066 is about 22703.9218198090. The cubic root of 515468066 is about 801.8022213241.

The spelling of 515468066 in words is "five hundred fifteen million, four hundred sixty-eight thousand, sixty-six".