68307693 has 8 divisors (see below), whose sum is σ = 93195168. Its totient is φ = 44479344.

The previous prime is 68307689. The next prime is 68307697. The reversal of 68307693 is 39670386.

68307693 = 212² + 213² + ... + 598².

It is an interprime number because it is at equal distance from previous prime (68307689) and next prime (68307697).

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

It is not a de Polignac number, because 68307693 - 2² = 68307689 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68307697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264630 + ... + 264887.

It is an arithmetic number, because the mean of its divisors is an integer number (11649396).

Almost surely, 2^68307693 is an apocalyptic number.

It is an amenable number.

68307693 is a deficient number, since it is larger than the sum of its proper divisors (24887475).

68307693 is a wasteful number, since it uses less digits than its factorization.

68307693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529563.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 68307693 is about 8264.8468225370. The cubic root of 68307693 is about 408.7802195952.

The spelling of 68307693 in words is "sixty-eight million, three hundred seven thousand, six hundred ninety-three".