71320761 has 24 divisors (see below), whose sum is σ = 106055040. Its totient is φ = 46162656.

The previous prime is 71320759. The next prime is 71320783. The reversal of 71320761 is 16702317.

It is not a de Polignac number, because 71320761 - 2¹ = 71320759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71320721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58191 + ... + 59403.

It is an arithmetic number, because the mean of its divisors is an integer number (4418960).

Almost surely, 2^71320761 is an apocalyptic number.

It is an amenable number.

71320761 is a deficient number, since it is larger than the sum of its proper divisors (34734279).

71320761 is a wasteful number, since it uses less digits than its factorization.

71320761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 71320761 is about 8445.1619877892. The cubic root of 71320761 is about 414.7044123436.

The spelling of 71320761 in words is "seventy-one million, three hundred twenty thousand, seven hundred sixty-one".