68699623 has 2 divisors, whose sum is σ = 68699624. Its totient is φ = 68699622.

The previous prime is 68699621. The next prime is 68699647. The reversal of 68699623 is 32699686.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68699623 - 2¹ = 68699621 is a prime.

Together with 68699621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68699621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34349811 + 34349812.

It is an arithmetic number, because the mean of its divisors is an integer number (34349812).

Almost surely, 2^68699623 is an apocalyptic number.

68699623 is a deficient number, since it is larger than the sum of its proper divisors (1).

68699623 is an equidigital number, since it uses as much as digits as its factorization.

68699623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 68699623 is about 8288.5235717829. The cubic root of 68699623 is about 409.5605503712.

The spelling of 68699623 in words is "sixty-eight million, six hundred ninety-nine thousand, six hundred twenty-three".