68861015 has 8 divisors (see below), whose sum is σ = 82708128. Its totient is φ = 55038880.

The previous prime is 68861003. The next prime is 68861029. The reversal of 68861015 is 51016886.

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

It is not a de Polignac number, because 68861015 - 2¹⁰ = 68859991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485 + ... + 11745.

It is an arithmetic number, because the mean of its divisors is an integer number (10338516).

Almost surely, 2^68861015 is an apocalyptic number.

68861015 is a deficient number, since it is larger than the sum of its proper divisors (13847113).

68861015 is a wasteful number, since it uses less digits than its factorization.

68861015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12489.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 68861015 is about 8298.2537319607. The cubic root of 68861015 is about 409.8810184197.

Subtracting from 68861015 its sum of digits (35), we obtain a triangular number (68860980 = T₁₁₇₃₅).

The spelling of 68861015 in words is "sixty-eight million, eight hundred sixty-one thousand, fifteen".