71694442 has 4 divisors (see below), whose sum is σ = 107541666. Its totient is φ = 35847220.

The previous prime is 71694439. The next prime is 71694443. The reversal of 71694442 is 24449617.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 64016001 + 7678441 = 8001^2 + 2771^2 .

It is not an unprimeable number, because it can be changed into a prime (71694443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17923609 + ... + 17923612.

Almost surely, 2^71694442 is an apocalyptic number.

71694442 is a deficient number, since it is larger than the sum of its proper divisors (35847224).

71694442 is a wasteful number, since it uses less digits than its factorization.

71694442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35847223.

The product of its digits is 48384, while the sum is 37.

The square root of 71694442 is about 8467.2570529068. The cubic root of 71694442 is about 415.4274243401.

It can be divided in two parts, 7169 and 4442, that added together give a palindrome (11611).

The spelling of 71694442 in words is "seventy-one million, six hundred ninety-four thousand, four hundred forty-two".