68687435 has 4 divisors (see below), whose sum is σ = 82424928. Its totient is φ = 54949944.

The previous prime is 68687393. The next prime is 68687467. The reversal of 68687435 is 53478686.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53478686 = 2 ⋅26739343.

It is a cyclic number.

It is not a de Polignac number, because 68687435 - 2⁶ = 68687371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68687435.

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, 6868739 + ... + 6868748.

It is an arithmetic number, because the mean of its divisors is an integer number (20606232).

Almost surely, 2^68687435 is an apocalyptic number.

68687435 is a deficient number, since it is larger than the sum of its proper divisors (13737493).

68687435 is a wasteful number, since it uses less digits than its factorization.

68687435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13737492.

The product of its digits is 967680, while the sum is 47.

The square root of 68687435 is about 8287.7883056941. The cubic root of 68687435 is about 409.5363288933.

The spelling of 68687435 in words is "sixty-eight million, six hundred eighty-seven thousand, four hundred thirty-five".