68137435 has 4 divisors (see below), whose sum is σ = 81764928. Its totient is φ = 54509944.

The previous prime is 68137429. The next prime is 68137441. The reversal of 68137435 is 53473186.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68137429) and next prime (68137441).

It is a cyclic number.

It is not a de Polignac number, because 68137435 - 2⁵ = 68137403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68137394 and 68137403.

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, 6813739 + ... + 6813748.

It is an arithmetic number, because the mean of its divisors is an integer number (20441232).

Almost surely, 2^68137435 is an apocalyptic number.

68137435 is a deficient number, since it is larger than the sum of its proper divisors (13627493).

68137435 is a wasteful number, since it uses less digits than its factorization.

68137435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13627492.

The product of its digits is 60480, while the sum is 37.

The square root of 68137435 is about 8254.5402658174. The cubic root of 68137435 is about 408.4403066485.

The spelling of 68137435 in words is "sixty-eight million, one hundred thirty-seven thousand, four hundred thirty-five".