71898994 has 8 divisors (see below), whose sum is σ = 110479068. Its totient is φ = 35072640.

The previous prime is 71898979. The next prime is 71898997. The reversal of 71898994 is 49989817.

It can be written as a sum of positive squares in 2 ways, for example, as 66210769 + 5688225 = 8137^2 + 2385^2 .

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

It is not an unprimeable number, because it can be changed into a prime (71898997) 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, 438327 + ... + 438490.

Almost surely, 2^71898994 is an apocalyptic number.

71898994 is a deficient number, since it is larger than the sum of its proper divisors (38580074).

71898994 is a wasteful number, since it uses less digits than its factorization.

71898994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876860.

The product of its digits is 1306368, while the sum is 55.

The square root of 71898994 is about 8479.3274497451. The cubic root of 71898994 is about 415.8221356560.

The spelling of 71898994 in words is "seventy-one million, eight hundred ninety-eight thousand, nine hundred ninety-four".