71894915 has 8 divisors (see below), whose sum is σ = 89249040. Its totient is φ = 55532512.

The previous prime is 71894903. The next prime is 71894929. The reversal of 71894915 is 51949817.

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 71894915 - 2²⁰ = 70846339 is a prime.

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, 247769 + ... + 248058.

It is an arithmetic number, because the mean of its divisors is an integer number (11156130).

Almost surely, 2^71894915 is an apocalyptic number.

71894915 is a deficient number, since it is larger than the sum of its proper divisors (17354125).

71894915 is a wasteful number, since it uses less digits than its factorization.

71894915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495861.

The product of its digits is 90720, while the sum is 44.

The square root of 71894915 is about 8479.0869201819. The cubic root of 71894915 is about 415.8142719828.

The spelling of 71894915 in words is "seventy-one million, eight hundred ninety-four thousand, nine hundred fifteen".