622761 has 8 divisors (see below), whose sum is σ = 879264. Its totient is φ = 390720.

The previous prime is 622751. The next prime is 622777. The reversal of 622761 is 167226.

622761 = T₂₅₄ + T₂₅₅ + ... + T₂₇₁.

It is a happy number.

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

It is not a de Polignac number, because 622761 - 2⁵ = 622729 is a prime.

622761 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6055 + ... + 6156.

It is an arithmetic number, because the mean of its divisors is an integer number (109908).

2⁶²²⁷⁶¹ is an apocalyptic number.

It is an amenable number.

622761 is a deficient number, since it is larger than the sum of its proper divisors (256503).

622761 is a wasteful number, since it uses less digits than its factorization.

622761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12231.

The product of its digits is 1008, while the sum is 24.

The square root of 622761 is about 789.1520765987. The cubic root of 622761 is about 85.3965782094.

Adding to 622761 its reverse (167226), we get a palindrome (789987).

Subtracting from 622761 its reverse (167226), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 622761 in words is "six hundred twenty-two thousand, seven hundred sixty-one".