68773231 has 4 divisors (see below), whose sum is σ = 68960992. Its totient is φ = 68585472.

The previous prime is 68773193. The next prime is 68773241. The reversal of 68773231 is 13237786.

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

It is a 11-Lehmer number, since φ(68773231) divides (68773231-1)¹¹.

It is a cyclic number.

It is not a de Polignac number, because 68773231 - 2⁹ = 68772719 is a prime.

It is a super-2 number, since 2×68773231² = 9459514604358722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68773241) 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, 93330 + ... + 94063.

It is an arithmetic number, because the mean of its divisors is an integer number (17240248).

Almost surely, 2^68773231 is an apocalyptic number.

68773231 is a deficient number, since it is larger than the sum of its proper divisors (187761).

68773231 is a wasteful number, since it uses less digits than its factorization.

68773231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187760.

The product of its digits is 42336, while the sum is 37.

The square root of 68773231 is about 8292.9627395762. The cubic root of 68773231 is about 409.7067722918.

The spelling of 68773231 in words is "sixty-eight million, seven hundred seventy-three thousand, two hundred thirty-one".