71621914 has 32 divisors (see below), whose sum is σ = 132975360. Its totient is φ = 28173312.

The previous prime is 71621863. The next prime is 71621917. The reversal of 71621914 is 41912617.

It is not an unprimeable number, because it can be changed into a prime (71621917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34107 + ... + 36145.

It is an arithmetic number, because the mean of its divisors is an integer number (4155480).

Almost surely, 2^71621914 is an apocalyptic number.

71621914 is a deficient number, since it is larger than the sum of its proper divisors (61353446).

71621914 is a wasteful number, since it uses less digits than its factorization.

71621914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254.

The product of its digits is 3024, while the sum is 31.

The square root of 71621914 is about 8462.9731182369. The cubic root of 71621914 is about 415.2872912733.

The spelling of 71621914 in words is "seventy-one million, six hundred twenty-one thousand, nine hundred fourteen".