71845105 has 8 divisors (see below), whose sum is σ = 87501312. Its totient is φ = 56617968.

The previous prime is 71845091. The next prime is 71845133. The reversal of 71845105 is 50154817.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71845105 is a prime.

It is a super-2 number, since 2×71845105² = 10323438224922050, which contains 22 as substring.

It is a Duffinian number.

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, 106897 + ... + 107566.

It is an arithmetic number, because the mean of its divisors is an integer number (10937664).

Almost surely, 2^71845105 is an apocalyptic number.

It is an amenable number.

71845105 is a deficient number, since it is larger than the sum of its proper divisors (15656207).

71845105 is a wasteful number, since it uses less digits than its factorization.

71845105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214535.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 71845105 is about 8476.1491846239. The cubic root of 71845105 is about 415.7182221028.

The spelling of 71845105 in words is "seventy-one million, eight hundred forty-five thousand, one hundred five".