68069090 has 16 divisors (see below), whose sum is σ = 126749880. Its totient is φ = 26288640.

The previous prime is 68069063. The next prime is 68069101. The reversal of 68069090 is 9096086.

It can be written as a sum of positive squares in 4 ways, for example, as 60357361 + 7711729 = 7769^2 + 2777^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117071 + ... + 117650.

Almost surely, 2^68069090 is an apocalyptic number.

68069090 is a deficient number, since it is larger than the sum of its proper divisors (58680790).

68069090 is a wasteful number, since it uses less digits than its factorization.

68069090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234757.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 68069090 is about 8250.3993842723. The cubic root of 68069090 is about 408.3036994553.

The spelling of 68069090 in words is "sixty-eight million, sixty-nine thousand, ninety".