622778345 has 8 divisors (see below), whose sum is σ = 854096064. Its totient is φ = 427047984.

The previous prime is 622778329. The next prime is 622778347. The reversal of 622778345 is 543877226.

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 622778345 - 2⁴ = 622778329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622778296 and 622778305.

It is not an unprimeable number, because it can be changed into a prime (622778347) 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, 8896799 + ... + 8896868.

It is an arithmetic number, because the mean of its divisors is an integer number (106762008).

Almost surely, 2^622778345 is an apocalyptic number.

It is an amenable number.

622778345 is a deficient number, since it is larger than the sum of its proper divisors (231317719).

622778345 is a wasteful number, since it uses less digits than its factorization.

622778345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17793679.

The product of its digits is 564480, while the sum is 44.

The square root of 622778345 is about 24955.5273436568. The cubic root of 622778345 is about 853.9737101747.

The spelling of 622778345 in words is "six hundred twenty-two million, seven hundred seventy-eight thousand, three hundred forty-five".