68400667306 has 8 divisors (see below), whose sum is σ = 102609855684. Its totient is φ = 34197382080.

The previous prime is 68400667301. The next prime is 68400667331. The reversal of 68400667306 is 60376600486.

It can be written as a sum of positive squares in 2 ways, for example, as 67812847281 + 587820025 = 260409^2 + 24245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68400667301) 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, 1446705 + ... + 1493236.

Almost surely, 2^68400667306 is an apocalyptic number.

68400667306 is a deficient number, since it is larger than the sum of its proper divisors (34209188378).

68400667306 is a wasteful number, since it uses less digits than its factorization.

68400667306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951576.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 68400667306 in words is "sixty-eight billion, four hundred million, six hundred sixty-seven thousand, three hundred six".