68901665 has 16 divisors (see below), whose sum is σ = 94631808. Its totient is φ = 47177856.

The previous prime is 68901653. The next prime is 68901713. The reversal of 68901665 is 56610986.

It is a cyclic number.

It is not a de Polignac number, because 68901665 - 2⁶ = 68901601 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, 38429 + ... + 40181.

It is an arithmetic number, because the mean of its divisors is an integer number (5914488).

Almost surely, 2^68901665 is an apocalyptic number.

It is an amenable number.

68901665 is a deficient number, since it is larger than the sum of its proper divisors (25730143).

68901665 is a wasteful number, since it uses less digits than its factorization.

68901665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 68901665 is about 8300.7026810988. The cubic root of 68901665 is about 409.9616561405.

The spelling of 68901665 in words is "sixty-eight million, nine hundred one thousand, six hundred sixty-five".