68630515 has 8 divisors (see below), whose sum is σ = 84365568. Its totient is φ = 53565120.

The previous prime is 68630503. The next prime is 68630519. The reversal of 68630515 is 51503686.

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

It is not a de Polignac number, because 68630515 - 2⁵ = 68630483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68630519) 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, 167187 + ... + 167596.

It is an arithmetic number, because the mean of its divisors is an integer number (10545696).

Almost surely, 2^68630515 is an apocalyptic number.

68630515 is a deficient number, since it is larger than the sum of its proper divisors (15735053).

68630515 is a wasteful number, since it uses less digits than its factorization.

68630515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334829.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 68630515 is about 8284.3536259626. The cubic root of 68630515 is about 409.4231725842.

The spelling of 68630515 in words is "sixty-eight million, six hundred thirty thousand, five hundred fifteen".