71009465 has 8 divisors (see below), whose sum is σ = 85584840. Its totient is φ = 56558592.

The previous prime is 71009447. The next prime is 71009473. The reversal of 71009465 is 56490017.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47554816 + 23454649 = 6896^2 + 4843^2 .

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 71009465 - 2¹⁸ = 70747321 is a prime.

It is a Curzon 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, 29864 + ... + 32153.

It is an arithmetic number, because the mean of its divisors is an integer number (10698105).

Almost surely, 2^71009465 is an apocalyptic number.

It is an amenable number.

71009465 is a deficient number, since it is larger than the sum of its proper divisors (14575375).

71009465 is a wasteful number, since it uses less digits than its factorization.

71009465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62251.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 71009465 is about 8426.7113988792. The cubic root of 71009465 is about 414.1001745191.

The spelling of 71009465 in words is "seventy-one million, nine thousand, four hundred sixty-five".