71167998 has 32 divisors (see below), whose sum is σ = 155675520. Its totient is φ = 21510560.

The previous prime is 71167981. The next prime is 71168039. The reversal of 71167998 is 89976117.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29668 + ... + 31976.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^71167998 is an apocalyptic number.

71167998 is an abundant number, since it is smaller than the sum of its proper divisors (84507522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71167998 is a wasteful number, since it uses less digits than its factorization.

71167998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792.

The product of its digits is 190512, while the sum is 48.

The square root of 71167998 is about 8436.1127303990. The cubic root of 71167998 is about 414.4081135085.

The spelling of 71167998 in words is "seventy-one million, one hundred sixty-seven thousand, nine hundred ninety-eight".