622777609429 has 4 divisors (see below), whose sum is σ = 624742207884. Its totient is φ = 620813010976.

The previous prime is 622777609403. The next prime is 622777609439. The reversal of 622777609429 is 924906777226.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 924906777226 = 2 ⋅462453388613.

It can be written as a sum of positive squares in 2 ways, for example, as 201355920529 + 421421688900 = 448727^2 + 649170^2 .

It is a cyclic number.

It is not a de Polignac number, because 622777609429 - 2¹⁹ = 622777085141 is a prime.

It is a super-2 number, since 2×622777609429² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622777609439) 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, 982298752 + ... + 982299385.

It is an arithmetic number, because the mean of its divisors is an integer number (156185551971).

Almost surely, 2^622777609429 is an apocalyptic number.

It is an amenable number.

622777609429 is a deficient number, since it is larger than the sum of its proper divisors (1964598455).

622777609429 is a wasteful number, since it uses less digits than its factorization.

622777609429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964598454.

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 622777609429 in words is "six hundred twenty-two billion, seven hundred seventy-seven million, six hundred nine thousand, four hundred twenty-nine".