71621674 has 8 divisors (see below), whose sum is σ = 107821188. Its totient is φ = 35681280.

The previous prime is 71621657. The next prime is 71621681. The reversal of 71621674 is 47612617.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 69839449 + 1782225 = 8357^2 + 1335^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 64087 + ... + 65194.

Almost surely, 2^71621674 is an apocalyptic number.

71621674 is a deficient number, since it is larger than the sum of its proper divisors (36199514).

71621674 is a wasteful number, since it uses less digits than its factorization.

71621674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129560.

The product of its digits is 14112, while the sum is 34.

The square root of 71621674 is about 8462.9589388109. The cubic root of 71621674 is about 415.2868274066.

It can be divided in two parts, 7162 and 1674, that added together give a square (8836 = 94²).

The spelling of 71621674 in words is "seventy-one million, six hundred twenty-one thousand, six hundred seventy-four".