71396749 has 2 divisors, whose sum is σ = 71396750. Its totient is φ = 71396748.

The previous prime is 71396747. The next prime is 71396783. The reversal of 71396749 is 94769317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67535524 + 3861225 = 8218^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 71396749 - 2¹ = 71396747 is a prime.

Together with 71396747, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 71396699 and 71396708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71396747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35698374 + 35698375.

It is an arithmetic number, because the mean of its divisors is an integer number (35698375).

Almost surely, 2^71396749 is an apocalyptic number.

It is an amenable number.

71396749 is a deficient number, since it is larger than the sum of its proper divisors (1).

71396749 is an equidigital number, since it uses as much as digits as its factorization.

71396749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 71396749 is about 8449.6596972896. The cubic root of 71396749 is about 414.8516409741.

The spelling of 71396749 in words is "seventy-one million, three hundred ninety-six thousand, seven hundred forty-nine".