68238901 has 4 divisors (see below), whose sum is σ = 72252972. Its totient is φ = 64224832.

The previous prime is 68238851. The next prime is 68238913. The reversal of 68238901 is 10983286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33074001 + 35164900 = 5751^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 68238901 - 2²¹ = 66141749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68238301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2007010 + ... + 2007043.

It is an arithmetic number, because the mean of its divisors is an integer number (18063243).

Almost surely, 2^68238901 is an apocalyptic number.

It is an amenable number.

68238901 is a deficient number, since it is larger than the sum of its proper divisors (4014071).

68238901 is a wasteful number, since it uses less digits than its factorization.

68238901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014070.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 68238901 is about 8260.6840515783. The cubic root of 68238901 is about 408.6429473350.

The spelling of 68238901 in words is "sixty-eight million, two hundred thirty-eight thousand, nine hundred one".