68515007 has 8 divisors (see below), whose sum is σ = 78677760. Its totient is φ = 59007960.

The previous prime is 68515003. The next prime is 68515021. The reversal of 68515007 is 70051586.

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

It is not a de Polignac number, because 68515007 - 2² = 68515003 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 (68515001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163703 + ... + 164120.

It is an arithmetic number, because the mean of its divisors is an integer number (9834720).

Almost surely, 2^68515007 is an apocalyptic number.

68515007 is a deficient number, since it is larger than the sum of its proper divisors (10162753).

68515007 is a wasteful number, since it uses less digits than its factorization.

68515007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327853.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 68515007 is about 8277.3792349994. The cubic root of 68515007 is about 409.1933515494.

The spelling of 68515007 in words is "sixty-eight million, five hundred fifteen thousand, seven".