77790223 has 8 divisors (see below), whose sum is σ = 88962848. Its totient is φ = 66632544.

The previous prime is 77790211. The next prime is 77790233. The reversal of 77790223 is 32209777.

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

It is a cyclic number.

It is not a de Polignac number, because 77790223 - 2²¹ = 75693071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77790233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11665 + ... + 17077.

It is an arithmetic number, because the mean of its divisors is an integer number (11120356).

Almost surely, 2^77790223 is an apocalyptic number.

77790223 is a deficient number, since it is larger than the sum of its proper divisors (11172625).

77790223 is a wasteful number, since it uses less digits than its factorization.

77790223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7473.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 77790223 is about 8819.8765864382. The cubic root of 77790223 is about 426.8824877230.

The spelling of 77790223 in words is "seventy-seven million, seven hundred ninety thousand, two hundred twenty-three".