71616994 has 8 divisors (see below), whose sum is σ = 108019548. Its totient is φ = 35610480.

The previous prime is 71616991. The next prime is 71617001. The reversal of 71616994 is 49961617.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57078025 + 14538969 = 7555^2 + 3813^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 71616994.

It is not an unprimeable number, because it can be changed into a prime (71616991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98557 + ... + 99280.

Almost surely, 2^71616994 is an apocalyptic number.

71616994 is a deficient number, since it is larger than the sum of its proper divisors (36402554).

71616994 is a wasteful number, since it uses less digits than its factorization.

71616994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198020.

The product of its digits is 81648, while the sum is 43.

The square root of 71616994 is about 8462.6824352566. The cubic root of 71616994 is about 415.2777817989.

The spelling of 71616994 in words is "seventy-one million, six hundred sixteen thousand, nine hundred ninety-four".