71654965 has 8 divisors (see below), whose sum is σ = 86775480. Its totient is φ = 56797632.

The previous prime is 71654951. The next prime is 71654971. The reversal of 71654965 is 56945617.

It can be written as a sum of positive squares in 4 ways, for example, as 31281649 + 40373316 = 5593^2 + 6354^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71654965 - 2¹⁵ = 71622197 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 65194 + ... + 66283.

It is an arithmetic number, because the mean of its divisors is an integer number (10846935).

Almost surely, 2^71654965 is an apocalyptic number.

It is an amenable number.

71654965 is a deficient number, since it is larger than the sum of its proper divisors (15120515).

71654965 is a wasteful number, since it uses less digits than its factorization.

71654965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131591.

The product of its digits is 226800, while the sum is 43.

The square root of 71654965 is about 8464.9255755736. The cubic root of 71654965 is about 415.3511616203.

The spelling of 71654965 in words is "seventy-one million, six hundred fifty-four thousand, nine hundred sixty-five".