71274487 has 6 divisors (see below), whose sum is σ = 73648824. Its totient is φ = 68974380.

The previous prime is 71274479. The next prime is 71274503. The reversal of 71274487 is 78447217.

It is not a de Polignac number, because 71274487 - 2³ = 71274479 is a prime.

It is a super-2 number, since 2×71274487² = 10160104994226338, which contains 22 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 (71274457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36123 + ... + 38044.

It is an arithmetic number, because the mean of its divisors is an integer number (12274804).

Almost surely, 2^71274487 is an apocalyptic number.

71274487 is a deficient number, since it is larger than the sum of its proper divisors (2374337).

71274487 is an equidigital number, since it uses as much as digits as its factorization.

71274487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74229 (or 74198 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 71274487 is about 8442.4218681608. The cubic root of 71274487 is about 414.6147040853.

The spelling of 71274487 in words is "seventy-one million, two hundred seventy-four thousand, four hundred eighty-seven".