719664226 has 8 divisors (see below), whose sum is σ = 1105825644. Its totient is φ = 351055680.

The previous prime is 719664223. The next prime is 719664233. The reversal of 719664226 is 622466917.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 506475025 + 213189201 = 22505^2 + 14601^2 .

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 (719664221) 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, 4388115 + ... + 4388278.

Almost surely, 2^719664226 is an apocalyptic number.

719664226 is a deficient number, since it is larger than the sum of its proper divisors (386161418).

719664226 is a wasteful number, since it uses less digits than its factorization.

719664226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776436.

The product of its digits is 217728, while the sum is 43.

The square root of 719664226 is about 26826.5582212851. The cubic root of 719664226 is about 896.1415999437.

The spelling of 719664226 in words is "seven hundred nineteen million, six hundred sixty-four thousand, two hundred twenty-six".