68209478 has 8 divisors (see below), whose sum is σ = 102493272. Its totient is φ = 34045056.

The previous prime is 68209459. The next prime is 68209489. The reversal of 68209478 is 87490286.

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

It is a congruent 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, 28400 + ... + 30707.

It is an arithmetic number, because the mean of its divisors is an integer number (12811659).

Almost surely, 2^68209478 is an apocalyptic number.

68209478 is a deficient number, since it is larger than the sum of its proper divisors (34283794).

68209478 is a wasteful number, since it uses less digits than its factorization.

68209478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59686.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 68209478 is about 8258.9029537827. The cubic root of 68209478 is about 408.5842065007.

The spelling of 68209478 in words is "sixty-eight million, two hundred nine thousand, four hundred seventy-eight".