71479937 has 4 divisors (see below), whose sum is σ = 71734596. Its totient is φ = 71225280.

The previous prime is 71479907. The next prime is 71479939. The reversal of 71479937 is 73997417.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63504961 + 7974976 = 7969^2 + 2824^2 .

It is a cyclic number.

It is not a de Polignac number, because 71479937 - 2⁶ = 71479873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71479891 and 71479900.

It is not an unprimeable number, because it can be changed into a prime (71479939) 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, 126908 + ... + 127469.

It is an arithmetic number, because the mean of its divisors is an integer number (17933649).

Almost surely, 2^71479937 is an apocalyptic number.

It is an amenable number.

71479937 is a deficient number, since it is larger than the sum of its proper divisors (254659).

71479937 is a wasteful number, since it uses less digits than its factorization.

71479937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254658.

The product of its digits is 333396, while the sum is 47.

The square root of 71479937 is about 8454.5808293493. The cubic root of 71479937 is about 415.0127000517.

The spelling of 71479937 in words is "seventy-one million, four hundred seventy-nine thousand, nine hundred thirty-seven".