68451007 has 4 divisors (see below), whose sum is σ = 70659136. Its totient is φ = 66242880.

The previous prime is 68451001. The next prime is 68451023. The reversal of 68451007 is 70015486.

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 68451007 - 2²³ = 60062399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2208097 = 68451007 / (6 + 8 + 4 + 5 + 1 + 0 + 0 + 7).

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 68451007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68451001) 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, 1104018 + ... + 1104079.

It is an arithmetic number, because the mean of its divisors is an integer number (17664784).

Almost surely, 2^68451007 is an apocalyptic number.

68451007 is a deficient number, since it is larger than the sum of its proper divisors (2208129).

68451007 is a wasteful number, since it uses less digits than its factorization.

68451007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208128.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 68451007 is about 8273.5123738349. The cubic root of 68451007 is about 409.0659024250.

The spelling of 68451007 in words is "sixty-eight million, four hundred fifty-one thousand, seven".