68461945 has 8 divisors (see below), whose sum is σ = 82446336. Its totient is φ = 54574896.

The previous prime is 68461933. The next prime is 68461949. The reversal of 68461945 is 54916486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68461945 - 2¹³ = 68453753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68461949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22777 + ... + 25606.

It is an arithmetic number, because the mean of its divisors is an integer number (10305792).

Almost surely, 2^68461945 is an apocalyptic number.

It is an amenable number.

68461945 is a deficient number, since it is larger than the sum of its proper divisors (13984391).

68461945 is a wasteful number, since it uses less digits than its factorization.

68461945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48671.

The product of its digits is 207360, while the sum is 43.

The square root of 68461945 is about 8274.1733726095. The cubic root of 68461945 is about 409.0876899036.

The spelling of 68461945 in words is "sixty-eight million, four hundred sixty-one thousand, nine hundred forty-five".