71274637 has 8 divisors (see below), whose sum is σ = 82178496. Its totient is φ = 60551232.

The previous prime is 71274629. The next prime is 71274641. The reversal of 71274637 is 73647217.

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

It is not a de Polignac number, because 71274637 - 2³ = 71274629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71274596 and 71274605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71274737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44263 + ... + 45844.

It is an arithmetic number, because the mean of its divisors is an integer number (10272312).

Almost surely, 2^71274637 is an apocalyptic number.

It is an amenable number.

71274637 is a deficient number, since it is larger than the sum of its proper divisors (10903859).

71274637 is a wasteful number, since it uses less digits than its factorization.

71274637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90227.

The product of its digits is 49392, while the sum is 37.

The square root of 71274637 is about 8442.4307518629. The cubic root of 71274637 is about 414.6149949428.

The spelling of 71274637 in words is "seventy-one million, two hundred seventy-four thousand, six hundred thirty-seven".