71151623 has 4 divisors (see below), whose sum is σ = 71712000. Its totient is φ = 70591248.

The previous prime is 71151617. The next prime is 71151631. The reversal of 71151623 is 32615117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71151623 - 2⁴ = 71151607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71151592 and 71151601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71151023) 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, 279998 + ... + 280251.

It is an arithmetic number, because the mean of its divisors is an integer number (17928000).

Almost surely, 2^71151623 is an apocalyptic number.

71151623 is a deficient number, since it is larger than the sum of its proper divisors (560377).

71151623 is a wasteful number, since it uses less digits than its factorization.

71151623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560376.

The product of its digits is 1260, while the sum is 26.

The square root of 71151623 is about 8435.1421446233. The cubic root of 71151623 is about 414.3763274362.

The spelling of 71151623 in words is "seventy-one million, one hundred fifty-one thousand, six hundred twenty-three".