76640222 has 8 divisors (see below), whose sum is σ = 115036200. Its totient is φ = 38294824.

The previous prime is 76640219. The next prime is 76640231. The reversal of 76640222 is 22204667.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8597 + ... + 15072.

It is an arithmetic number, because the mean of its divisors is an integer number (14379525).

Almost surely, 2^76640222 is an apocalyptic number.

76640222 is a deficient number, since it is larger than the sum of its proper divisors (38395978).

76640222 is a wasteful number, since it uses less digits than its factorization.

76640222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25290.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 76640222 is about 8754.4401305852. The cubic root of 76640222 is about 424.7684496472.

Adding to 76640222 its reverse (22204667), we get a palindrome (98844889).

The spelling of 76640222 in words is "seventy-six million, six hundred forty thousand, two hundred twenty-two".