71641213 has 32 divisors (see below), whose sum is σ = 91010304. Its totient is φ = 54991872.

The previous prime is 71641211. The next prime is 71641237. The reversal of 71641213 is 31214617.

It is not a de Polignac number, because 71641213 - 2¹ = 71641211 is a prime.

It is a super-2 number, since 2×71641213² = 10264926800222738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71641211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233206 + ... + 233512.

It is an arithmetic number, because the mean of its divisors is an integer number (2844072).

Almost surely, 2^71641213 is an apocalyptic number.

It is an amenable number.

71641213 is a deficient number, since it is larger than the sum of its proper divisors (19369091).

71641213 is a wasteful number, since it uses less digits than its factorization.

71641213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421.

The product of its digits is 1008, while the sum is 25.

The square root of 71641213 is about 8464.1132435714. The cubic root of 71641213 is about 415.3245885623.

The spelling of 71641213 in words is "seventy-one million, six hundred forty-one thousand, two hundred thirteen".