68072461 has 4 divisors (see below), whose sum is σ = 68523424. Its totient is φ = 67621500.

The previous prime is 68072453. The next prime is 68072507. The reversal of 68072461 is 16427086.

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 68072461 - 2³ = 68072453 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 (68072161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225255 + ... + 225556.

It is an arithmetic number, because the mean of its divisors is an integer number (17130856).

Almost surely, 2^68072461 is an apocalyptic number.

It is an amenable number.

68072461 is a deficient number, since it is larger than the sum of its proper divisors (450963).

68072461 is a wasteful number, since it uses less digits than its factorization.

68072461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450962.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 68072461 is about 8250.6036748834. The cubic root of 68072461 is about 408.3104395143.

The spelling of 68072461 in words is "sixty-eight million, seventy-two thousand, four hundred sixty-one".