68665461 has 4 divisors (see below), whose sum is σ = 91553952. Its totient is φ = 45776972.

The previous prime is 68665433. The next prime is 68665469. The reversal of 68665461 is 16456686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68665461 - 2¹⁰ = 68664437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68665469) 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, 11444241 + ... + 11444246.

It is an arithmetic number, because the mean of its divisors is an integer number (22888488).

Almost surely, 2^68665461 is an apocalyptic number.

It is an amenable number.

68665461 is a deficient number, since it is larger than the sum of its proper divisors (22888491).

68665461 is a wasteful number, since it uses less digits than its factorization.

68665461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22888490.

The product of its digits is 207360, while the sum is 42.

The square root of 68665461 is about 8286.4625142458. The cubic root of 68665461 is about 409.4926522436.

The spelling of 68665461 in words is "sixty-eight million, six hundred sixty-five thousand, four hundred sixty-one".