68861471 has 8 divisors (see below), whose sum is σ = 82120704. Its totient is φ = 56457720.

The previous prime is 68861467. The next prime is 68861473. The reversal of 68861471 is 17416886.

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 68861471 - 2² = 68861467 is a prime.

It is a super-3 number, since 3×68861471³ (a number of 24 digits) contains 333 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 (68861473) 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, 213695 + ... + 214016.

It is an arithmetic number, because the mean of its divisors is an integer number (10265088).

Almost surely, 2^68861471 is an apocalyptic number.

68861471 is a deficient number, since it is larger than the sum of its proper divisors (13259233).

68861471 is a wasteful number, since it uses less digits than its factorization.

68861471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427741.

The product of its digits is 64512, while the sum is 41.

The square root of 68861471 is about 8298.2812075755. The cubic root of 68861471 is about 409.8819231664.

The spelling of 68861471 in words is "sixty-eight million, eight hundred sixty-one thousand, four hundred seventy-one".