1367068721 has 4 divisors (see below), whose sum is σ = 1411167744. Its totient is φ = 1322969700.

The previous prime is 1367068691. The next prime is 1367068723. The reversal of 1367068721 is 1278607631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1367068721 - 2¹⁰ = 1367067697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1367068723) 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, 22049465 + ... + 22049526.

It is an arithmetic number, because the mean of its divisors is an integer number (352791936).

Almost surely, 2^1367068721 is an apocalyptic number.

It is an amenable number.

1367068721 is a deficient number, since it is larger than the sum of its proper divisors (44099023).

1367068721 is an equidigital number, since it uses as much as digits as its factorization.

1367068721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44099022.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1367068721 is about 36973.8924242498. The cubic root of 1367068721 is about 1109.8478597314.

The spelling of 1367068721 in words is "one billion, three hundred sixty-seven million, sixty-eight thousand, seven hundred twenty-one".