68491479 has 16 divisors (see below), whose sum is σ = 104514048. Its totient is φ = 39083232.

The previous prime is 68491441. The next prime is 68491483. The reversal of 68491479 is 97419486.

It is not a de Polignac number, because 68491479 - 2⁹ = 68490967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68491439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16789 + ... + 20465.

It is an arithmetic number, because the mean of its divisors is an integer number (6532128).

Almost surely, 2^68491479 is an apocalyptic number.

68491479 is a deficient number, since it is larger than the sum of its proper divisors (36022569).

68491479 is a wasteful number, since it uses less digits than its factorization.

68491479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4574.

The product of its digits is 435456, while the sum is 48.

The square root of 68491479 is about 8275.9578901780. The cubic root of 68491479 is about 409.1465072942.

The spelling of 68491479 in words is "sixty-eight million, four hundred ninety-one thousand, four hundred seventy-nine".