68541515 has 16 divisors (see below), whose sum is σ = 94424832. Its totient is φ = 46787424.

The previous prime is 68541497. The next prime is 68541521. The reversal of 68541515 is 51514586.

It is a happy number.

It is not a de Polignac number, because 68541515 - 2⁸ = 68541259 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3632 + ... + 12258.

It is an arithmetic number, because the mean of its divisors is an integer number (5901552).

Almost surely, 2^68541515 is an apocalyptic number.

68541515 is a deficient number, since it is larger than the sum of its proper divisors (25883317).

68541515 is a wasteful number, since it uses less digits than its factorization.

68541515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8866.

The product of its digits is 24000, while the sum is 35.

The square root of 68541515 is about 8278.9803116084. The cubic root of 68541515 is about 409.2461161396.

The spelling of 68541515 in words is "sixty-eight million, five hundred forty-one thousand, five hundred fifteen".