71478861 has 8 divisors (see below), whose sum is σ = 95356704. Its totient is φ = 47626800.

The previous prime is 71478851. The next prime is 71478887. The reversal of 71478861 is 16887417.

It is a happy number.

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

It is not a de Polignac number, because 71478861 - 2¹¹ = 71476813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71478851) 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, 1386 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (11919588).

Almost surely, 2^71478861 is an apocalyptic number.

It is an amenable number.

71478861 is a deficient number, since it is larger than the sum of its proper divisors (23877843).

71478861 is a wasteful number, since it uses less digits than its factorization.

71478861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12891.

The product of its digits is 75264, while the sum is 42.

The square root of 71478861 is about 8454.5171949674. The cubic root of 71478861 is about 415.0106176216.

The spelling of 71478861 in words is "seventy-one million, four hundred seventy-eight thousand, eight hundred sixty-one".