68673391 has 12 divisors (see below), whose sum is σ = 72947784. Its totient is φ = 64638000.

The previous prime is 68673389. The next prime is 68673419. The reversal of 68673391 is 19337686.

It is not a de Polignac number, because 68673391 - 2¹ = 68673389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68670391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64816 + ... + 65866.

It is an arithmetic number, because the mean of its divisors is an integer number (6078982).

Almost surely, 2^68673391 is an apocalyptic number.

68673391 is a deficient number, since it is larger than the sum of its proper divisors (4274393).

68673391 is a wasteful number, since it uses less digits than its factorization.

68673391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 1251 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 68673391 is about 8286.9409917050. The cubic root of 68673391 is about 409.5084153929.

The spelling of 68673391 in words is "sixty-eight million, six hundred seventy-three thousand, three hundred ninety-one".