71330651 has 4 divisors (see below), whose sum is σ = 81520752. Its totient is φ = 61140552.

The previous prime is 71330641. The next prime is 71330683. The reversal of 71330651 is 15603317.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15603317 = 59 ⋅264463.

It is a cyclic number.

It is not a de Polignac number, because 71330651 - 2¹⁸ = 71068507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71330651.

It is not an unprimeable number, because it can be changed into a prime (71330641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5095040 + ... + 5095053.

It is an arithmetic number, because the mean of its divisors is an integer number (20380188).

Almost surely, 2^71330651 is an apocalyptic number.

71330651 is a deficient number, since it is larger than the sum of its proper divisors (10190101).

71330651 is a wasteful number, since it uses less digits than its factorization.

71330651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10190100.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 71330651 is about 8445.7475098419. The cubic root of 71330651 is about 414.7235803811.

Adding to 71330651 its reverse (15603317), we get a palindrome (86933968).

The spelling of 71330651 in words is "seventy-one million, three hundred thirty thousand, six hundred fifty-one".