68703905 has 32 divisors (see below), whose sum is σ = 91929600. Its totient is φ = 49075200.

The previous prime is 68703883. The next prime is 68703913. The reversal of 68703905 is 50930786.

It is not a de Polignac number, because 68703905 - 2¹⁸ = 68441761 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120461 + ... + 121029.

It is an arithmetic number, because the mean of its divisors is an integer number (2872800).

Almost surely, 2^68703905 is an apocalyptic number.

It is an amenable number.

68703905 is a deficient number, since it is larger than the sum of its proper divisors (23225695).

68703905 is a wasteful number, since it uses less digits than its factorization.

68703905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 68703905 is about 8288.7818767295. The cubic root of 68703905 is about 409.5690594031.

The spelling of 68703905 in words is "sixty-eight million, seven hundred three thousand, nine hundred five".