71295993 has 6 divisors (see below), whose sum is σ = 102983114. Its totient is φ = 47530656.

The previous prime is 71295947. The next prime is 71295997. The reversal of 71295993 is 39959217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 70610409 + 685584 = 8403^2 + 828^2 .

It is not a de Polignac number, because 71295993 - 2¹⁶ = 71230457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71295997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3960880 + ... + 3960897.

Almost surely, 2^71295993 is an apocalyptic number.

It is an amenable number.

71295993 is a deficient number, since it is larger than the sum of its proper divisors (31687121).

71295993 is a wasteful number, since it uses less digits than its factorization.

71295993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921783 (or 7921780 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 71295993 is about 8443.6954587432. The cubic root of 71295993 is about 414.6564011335.

The spelling of 71295993 in words is "seventy-one million, two hundred ninety-five thousand, nine hundred ninety-three".