71652979 has 16 divisors (see below), whose sum is σ = 76334400. Its totient is φ = 67167360.

The previous prime is 71652941. The next prime is 71652989. The reversal of 71652979 is 97925617.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 71652979 - 2⁷ = 71652851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71652929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119322 + ... + 119920.

It is an arithmetic number, because the mean of its divisors is an integer number (4770900).

Almost surely, 2^71652979 is an apocalyptic number.

71652979 is a deficient number, since it is larger than the sum of its proper divisors (4681421).

71652979 is a wasteful number, since it uses less digits than its factorization.

71652979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750.

The product of its digits is 238140, while the sum is 46.

The square root of 71652979 is about 8464.8082671730. The cubic root of 71652979 is about 415.3473242727.

The spelling of 71652979 in words is "seventy-one million, six hundred fifty-two thousand, nine hundred seventy-nine".