71630061 has 16 divisors (see below), whose sum is σ = 101332800. Its totient is φ = 44851968.

The previous prime is 71630059. The next prime is 71630081. The reversal of 71630061 is 16003617.

It is not a de Polignac number, because 71630061 - 2¹ = 71630059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71630081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30435 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (6333300).

Almost surely, 2^71630061 is an apocalyptic number.

It is an amenable number.

71630061 is a deficient number, since it is larger than the sum of its proper divisors (29702739).

71630061 is a wasteful number, since it uses less digits than its factorization.

71630061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2908.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 71630061 is about 8463.4544365761. The cubic root of 71630061 is about 415.3030370001.

Adding to 71630061 its reverse (16003617), we get a palindrome (87633678).

The spelling of 71630061 in words is "seventy-one million, six hundred thirty thousand, sixty-one".