71048641 has 4 divisors (see below), whose sum is σ = 71409492. Its totient is φ = 70687792.

The previous prime is 71048639. The next prime is 71048669. The reversal of 71048641 is 14684017.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14684017 = 19 ⋅772843.

It can be written as a sum of positive squares in 2 ways, for example, as 62869041 + 8179600 = 7929^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 71048641 - 2¹ = 71048639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71048741) 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, 180130 + ... + 180523.

It is an arithmetic number, because the mean of its divisors is an integer number (17852373).

Almost surely, 2^71048641 is an apocalyptic number.

It is an amenable number.

71048641 is a deficient number, since it is larger than the sum of its proper divisors (360851).

71048641 is a wasteful number, since it uses less digits than its factorization.

71048641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360850.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 71048641 is about 8429.0355913355. The cubic root of 71048641 is about 414.1763136928.

The spelling of 71048641 in words is "seventy-one million, forty-eight thousand, six hundred forty-one".