68075515 has 16 divisors (see below), whose sum is σ = 86101056. Its totient is φ = 51568000.

The previous prime is 68075507. The next prime is 68075533. The reversal of 68075515 is 51557086.

It is not a de Polignac number, because 68075515 - 2³ = 68075507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8685 + ... + 14545.

It is an arithmetic number, because the mean of its divisors is an integer number (5381316).

Almost surely, 2^68075515 is an apocalyptic number.

68075515 is a deficient number, since it is larger than the sum of its proper divisors (18025541).

68075515 is a wasteful number, since it uses less digits than its factorization.

68075515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990.

The product of its (nonzero) digits is 42000, while the sum is 37.

The square root of 68075515 is about 8250.7887501741. The cubic root of 68075515 is about 408.3165455637.

The spelling of 68075515 in words is "sixty-eight million, seventy-five thousand, five hundred fifteen".