68432785 has 4 divisors (see below), whose sum is σ = 82119348. Its totient is φ = 54746224.

The previous prime is 68432761. The next prime is 68432831. The reversal of 68432785 is 58723486.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10246401 + 58186384 = 3201^2 + 7628^2 .

It is a cyclic number.

It is not a de Polignac number, because 68432785 - 2⁷ = 68432657 is a prime.

It is a Duffinian number.

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, 6843274 + ... + 6843283.

It is an arithmetic number, because the mean of its divisors is an integer number (20529837).

Almost surely, 2^68432785 is an apocalyptic number.

It is an amenable number.

68432785 is a deficient number, since it is larger than the sum of its proper divisors (13686563).

68432785 is a wasteful number, since it uses less digits than its factorization.

68432785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13686562.

The product of its digits is 322560, while the sum is 43.

The square root of 68432785 is about 8272.4110753758. The cubic root of 68432785 is about 409.0296007414.

The spelling of 68432785 in words is "sixty-eight million, four hundred thirty-two thousand, seven hundred eighty-five".