71384774 has 4 divisors (see below), whose sum is σ = 107077164. Its totient is φ = 35692386.

The previous prime is 71384743. The next prime is 71384777. The reversal of 71384774 is 47748317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47748317 = 127 ⋅375971.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71384777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17846192 + ... + 17846195.

It is an arithmetic number, because the mean of its divisors is an integer number (26769291).

Almost surely, 2^71384774 is an apocalyptic number.

71384774 is a deficient number, since it is larger than the sum of its proper divisors (35692390).

71384774 is a wasteful number, since it uses less digits than its factorization.

71384774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35692389.

The product of its digits is 131712, while the sum is 41.

The square root of 71384774 is about 8448.9510591552. The cubic root of 71384774 is about 414.8284460517.

The spelling of 71384774 in words is "seventy-one million, three hundred eighty-four thousand, seven hundred seventy-four".