71479885 has 8 divisors (see below), whose sum is σ = 85878936. Its totient is φ = 57115200.

The previous prime is 71479873. The next prime is 71479897. The reversal of 71479885 is 58897417.

It is an interprime number because it is at equal distance from previous prime (71479873) and next prime (71479897).

It can be written as a sum of positive squares in 4 ways, for example, as 29528356 + 41951529 = 5434^2 + 6477^2 .

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

It is not a de Polignac number, because 71479885 - 2⁵ = 71479853 is a prime.

It is a super-2 number, since 2×71479885² = 10218747919226450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3766 + ... + 12535.

It is an arithmetic number, because the mean of its divisors is an integer number (10734867).

Almost surely, 2^71479885 is an apocalyptic number.

It is an amenable number.

71479885 is a deficient number, since it is larger than the sum of its proper divisors (14399051).

71479885 is a wasteful number, since it uses less digits than its factorization.

71479885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17183.

The product of its digits is 564480, while the sum is 49.

The square root of 71479885 is about 8454.5777540927. The cubic root of 71479885 is about 415.0125994143.

The spelling of 71479885 in words is "seventy-one million, four hundred seventy-nine thousand, eight hundred eighty-five".