68517530 has 8 divisors (see below), whose sum is σ = 123331572. Its totient is φ = 27407008.

The previous prime is 68517521. The next prime is 68517563. The reversal of 68517530 is 3571586.

It can be written as a sum of positive squares in 2 ways, for example, as 67256401 + 1261129 = 8201^2 + 1123^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3425867 + ... + 3425886.

Almost surely, 2^68517530 is an apocalyptic number.

68517530 is a deficient number, since it is larger than the sum of its proper divisors (54814042).

68517530 is a wasteful number, since it uses less digits than its factorization.

68517530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6851760.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 68517530 is about 8277.5316369072. The cubic root of 68517530 is about 409.1983742065.

The spelling of 68517530 in words is "sixty-eight million, five hundred seventeen thousand, five hundred thirty".