71814146 has 4 divisors (see below), whose sum is σ = 107721222. Its totient is φ = 35907072.

The previous prime is 71814143. The next prime is 71814161. The reversal of 71814146 is 64141817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64141817 = 307 ⋅208931.

It can be written as a sum of positive squares in only one way, i.e., 71588521 + 225625 = 8461^2 + 475^2 .

It is not an unprimeable number, because it can be changed into a prime (71814143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17953535 + ... + 17953538.

Almost surely, 2^71814146 is an apocalyptic number.

71814146 is a deficient number, since it is larger than the sum of its proper divisors (35907076).

71814146 is a wasteful number, since it uses less digits than its factorization.

71814146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35907075.

The product of its digits is 5376, while the sum is 32.

The square root of 71814146 is about 8474.3227458010. The cubic root of 71814146 is about 415.6585007086.

The spelling of 71814146 in words is "seventy-one million, eight hundred fourteen thousand, one hundred forty-six".