68879641 has 4 divisors (see below), whose sum is σ = 71874432. Its totient is φ = 65884852.

The previous prime is 68879639. The next prime is 68879647. The reversal of 68879641 is 14697886.

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 68879641 - 2¹ = 68879639 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68879647) 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, 1497361 + ... + 1497406.

It is an arithmetic number, because the mean of its divisors is an integer number (17968608).

Almost surely, 2^68879641 is an apocalyptic number.

It is an amenable number.

68879641 is a deficient number, since it is larger than the sum of its proper divisors (2994791).

68879641 is a wasteful number, since it uses less digits than its factorization.

68879641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2994790.

The product of its digits is 580608, while the sum is 49.

The square root of 68879641 is about 8299.3759403946. The cubic root of 68879641 is about 409.9179708986.

The spelling of 68879641 in words is "sixty-eight million, eight hundred seventy-nine thousand, six hundred forty-one".