71541673 has 4 divisors (see below), whose sum is σ = 81761920. Its totient is φ = 61321428.

The previous prime is 71541667. The next prime is 71541709. The reversal of 71541673 is 37614517.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37614517 = 311 ⋅120947.

It is not a de Polignac number, because 71541673 - 2⁵ = 71541641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71541623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110113 + ... + 5110126.

It is an arithmetic number, because the mean of its divisors is an integer number (20440480).

Almost surely, 2^71541673 is an apocalyptic number.

It is an amenable number.

71541673 is a deficient number, since it is larger than the sum of its proper divisors (10220247).

71541673 is a wasteful number, since it uses less digits than its factorization.

71541673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220246.

The product of its digits is 17640, while the sum is 34.

The square root of 71541673 is about 8458.2310798417. The cubic root of 71541673 is about 415.1321454628.

The spelling of 71541673 in words is "seventy-one million, five hundred forty-one thousand, six hundred seventy-three".