71939674 has 8 divisors (see below), whose sum is σ = 108978228. Its totient is φ = 35613600.

The previous prime is 71939671. The next prime is 71939677. The reversal of 71939674 is 47693917.

It is an interprime number because it is at equal distance from previous prime (71939671) and next prime (71939677).

It can be written as a sum of positive squares in 2 ways, for example, as 53919649 + 18020025 = 7343^2 + 4245^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71939671) 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 3 ways as a sum of consecutive naturals, for example, 177867 + ... + 178270.

Almost surely, 2^71939674 is an apocalyptic number.

71939674 is a deficient number, since it is larger than the sum of its proper divisors (37038554).

71939674 is a wasteful number, since it uses less digits than its factorization.

71939674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356240.

The product of its digits is 285768, while the sum is 46.

The square root of 71939674 is about 8481.7258856910. The cubic root of 71939674 is about 415.9005440559.

The spelling of 71939674 in words is "seventy-one million, nine hundred thirty-nine thousand, six hundred seventy-four".