71992653 has 16 divisors (see below), whose sum is σ = 101422080. Its totient is φ = 45298224.

The previous prime is 71992649. The next prime is 71992663. The reversal of 71992653 is 35629917.

It is not a de Polignac number, because 71992653 - 2² = 71992649 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71992643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13900 + ... + 18362.

It is an arithmetic number, because the mean of its divisors is an integer number (6338880).

Almost surely, 2^71992653 is an apocalyptic number.

It is an amenable number.

71992653 is a deficient number, since it is larger than the sum of its proper divisors (29429427).

71992653 is a wasteful number, since it uses less digits than its factorization.

71992653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768.

The product of its digits is 102060, while the sum is 42.

The square root of 71992653 is about 8484.8484370671. The cubic root of 71992653 is about 416.0026137810.

The spelling of 71992653 in words is "seventy-one million, nine hundred ninety-two thousand, six hundred fifty-three".