68699687 has 8 divisors (see below), whose sum is σ = 82646400. Its totient is φ = 55786104.

The previous prime is 68699647. The next prime is 68699693. The reversal of 68699687 is 78699686.

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

It is a cyclic number.

It is not a de Polignac number, because 68699687 - 2⁶ = 68699623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68699647) 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, 258137 + ... + 258402.

It is an arithmetic number, because the mean of its divisors is an integer number (10330800).

Almost surely, 2^68699687 is an apocalyptic number.

68699687 is a deficient number, since it is larger than the sum of its proper divisors (13946713).

68699687 is a wasteful number, since it uses less digits than its factorization.

68699687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516565.

The product of its digits is 7838208, while the sum is 59.

The square root of 68699687 is about 8288.5274325419. The cubic root of 68699687 is about 409.5606775523.

Subtracting 68699687 from its reverse (78699686), we obtain a palindrome (9999999).

The spelling of 68699687 in words is "sixty-eight million, six hundred ninety-nine thousand, six hundred eighty-seven".