71842666 has 16 divisors (see below), whose sum is σ = 125483904. Its totient is φ = 30208464.

The previous prime is 71842651. The next prime is 71842681. The reversal of 71842666 is 66624817.

It is an interprime number because it is at equal distance from previous prime (71842651) and next prime (71842681).

It is a super-2 number, since 2×71842666² = 10322737315975112, which contains 22 as substring.

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, 47670 + ... + 49153.

It is an arithmetic number, because the mean of its divisors is an integer number (7842744).

Almost surely, 2^71842666 is an apocalyptic number.

71842666 is a deficient number, since it is larger than the sum of its proper divisors (53641238).

71842666 is a wasteful number, since it uses less digits than its factorization.

71842666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96885.

The product of its digits is 96768, while the sum is 40.

The square root of 71842666 is about 8476.0053091064. The cubic root of 71842666 is about 415.7135177776.

The spelling of 71842666 in words is "seventy-one million, eight hundred forty-two thousand, six hundred sixty-six".