71739485 has 8 divisors (see below), whose sum is σ = 88414296. Its totient is φ = 55840320.

The previous prime is 71739449. The next prime is 71739511. The reversal of 71739485 is 58493717.

It can be written as a sum of positive squares in 4 ways, for example, as 32024281 + 39715204 = 5659^2 + 6302^2 .

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

It is not a de Polignac number, because 71739485 - 2⁸ = 71739229 is a prime.

It is a super-3 number, since 3×71739485³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193706 + ... + 194075.

It is an arithmetic number, because the mean of its divisors is an integer number (11051787).

Almost surely, 2^71739485 is an apocalyptic number.

It is an amenable number.

71739485 is a deficient number, since it is larger than the sum of its proper divisors (16674811).

71739485 is a wasteful number, since it uses less digits than its factorization.

71739485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387823.

The product of its digits is 211680, while the sum is 44.

The square root of 71739485 is about 8469.9164694819. The cubic root of 71739485 is about 415.5144054208.

The spelling of 71739485 in words is "seventy-one million, seven hundred thirty-nine thousand, four hundred eighty-five".