71980893 has 10 divisors (see below), whose sum is σ = 107527134. Its totient is φ = 47987208.

The previous prime is 71980891. The next prime is 71980897. The reversal of 71980893 is 39808917.

It can be written as a sum of positive squares in only one way, i.e., 64593369 + 7387524 = 8037^2 + 2718^2 .

It is not a de Polignac number, because 71980893 - 2¹ = 71980891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71980891) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 444246 + ... + 444407.

Almost surely, 2^71980893 is an apocalyptic number.

It is an amenable number.

71980893 is a deficient number, since it is larger than the sum of its proper divisors (35546241).

71980893 is an equidigital number, since it uses as much as digits as its factorization.

71980893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888665 (or 888656 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 71980893 is about 8484.1554087605. The cubic root of 71980893 is about 415.9799612050.

The spelling of 71980893 in words is "seventy-one million, nine hundred eighty thousand, eight hundred ninety-three".