68884515 has 24 divisors (see below), whose sum is σ = 136457568. Its totient is φ = 31489920.

The previous prime is 68884513. The next prime is 68884531. The reversal of 68884515 is 51548886.

It is not a de Polignac number, because 68884515 - 2¹ = 68884513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (68884513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109026 + ... + 109655.

It is an arithmetic number, because the mean of its divisors is an integer number (5685732).

Almost surely, 2^68884515 is an apocalyptic number.

68884515 is a deficient number, since it is larger than the sum of its proper divisors (67573053).

68884515 is a wasteful number, since it uses less digits than its factorization.

68884515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218699 (or 218696 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 68884515 is about 8299.6695717360. The cubic root of 68884515 is about 409.9276394210.

The spelling of 68884515 in words is "sixty-eight million, eight hundred eighty-four thousand, five hundred fifteen".