71630465 has 8 divisors (see below), whose sum is σ = 86505000. Its totient is φ = 56938752.

The previous prime is 71630459. The next prime is 71630479. The reversal of 71630465 is 56403617.

It can be written as a sum of positive squares in 4 ways, for example, as 1540081 + 70090384 = 1241^2 + 8372^2 .

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 71630465 - 2¹⁶ = 71564929 is a prime.

It is a super-2 number, since 2×71630465² = 10261847032232450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44840 + ... + 46409.

It is an arithmetic number, because the mean of its divisors is an integer number (10813125).

Almost surely, 2^71630465 is an apocalyptic number.

It is an amenable number.

71630465 is a deficient number, since it is larger than the sum of its proper divisors (14874535).

71630465 is a wasteful number, since it uses less digits than its factorization.

71630465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91411.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 71630465 is about 8463.4783038654. The cubic root of 71630465 is about 415.3038177809.

The spelling of 71630465 in words is "seventy-one million, six hundred thirty thousand, four hundred sixty-five".