68731403 has 4 divisors (see below), whose sum is σ = 74018448. Its totient is φ = 63444360.

The previous prime is 68731349. The next prime is 68731423. The reversal of 68731403 is 30413786.

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

It is a cyclic number.

It is not a de Polignac number, because 68731403 - 2⁶ = 68731339 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 68731403.

It is not an unprimeable number, because it can be changed into a prime (68731423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2643503 + ... + 2643528.

It is an arithmetic number, because the mean of its divisors is an integer number (18504612).

Almost surely, 2^68731403 is an apocalyptic number.

68731403 is a deficient number, since it is larger than the sum of its proper divisors (5287045).

68731403 is a wasteful number, since it uses less digits than its factorization.

68731403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287044.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 68731403 is about 8290.4404587452. The cubic root of 68731403 is about 409.6236939870.

The spelling of 68731403 in words is "sixty-eight million, seven hundred thirty-one thousand, four hundred three".