68744515 has 32 divisors (see below), whose sum is σ = 103071744. Its totient is φ = 42923520.

The previous prime is 68744513. The next prime is 68744521. The reversal of 68744515 is 51544786.

It is not a de Polignac number, because 68744515 - 2¹ = 68744513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68744513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16582 + ... + 20308.

It is an arithmetic number, because the mean of its divisors is an integer number (3220992).

Almost surely, 2^68744515 is an apocalyptic number.

68744515 is a deficient number, since it is larger than the sum of its proper divisors (34327229).

68744515 is a wasteful number, since it uses less digits than its factorization.

68744515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787.

The product of its digits is 134400, while the sum is 40.

The square root of 68744515 is about 8291.2312113461. The cubic root of 68744515 is about 409.6497405205.

The spelling of 68744515 in words is "sixty-eight million, seven hundred forty-four thousand, five hundred fifteen".