622776947 has 8 divisors (see below), whose sum is σ = 670894560. Its totient is φ = 574689600.

The previous prime is 622776937. The next prime is 622776953. The reversal of 622776947 is 749677226.

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 622776947 - 2⁶ = 622776883 is a prime.

It is a super-2 number, since 2×622776947² = 775702251429281618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 622776895 and 622776904.

It is not an unprimeable number, because it can be changed into a prime (622776907) 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, 53447 + ... + 64047.

It is an arithmetic number, because the mean of its divisors is an integer number (83861820).

Almost surely, 2^622776947 is an apocalyptic number.

622776947 is a deficient number, since it is larger than the sum of its proper divisors (48117613).

622776947 is a wasteful number, since it uses less digits than its factorization.

622776947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15133.

The product of its digits is 1778112, while the sum is 50.

The square root of 622776947 is about 24955.4993338142. The cubic root of 622776947 is about 853.9730711800.

The spelling of 622776947 in words is "six hundred twenty-two million, seven hundred seventy-six thousand, nine hundred forty-seven".