623161 has 8 divisors (see below), whose sum is σ = 777024. Its totient is φ = 485520.

The previous prime is 623107. The next prime is 623171. The reversal of 623161 is 161326.

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

It is not a de Polignac number, because 623161 - 2¹¹ = 621113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623171) 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, 3970 + ... + 4123.

It is an arithmetic number, because the mean of its divisors is an integer number (97128).

2⁶²³¹⁶¹ is an apocalyptic number.

It is an amenable number.

623161 is a deficient number, since it is larger than the sum of its proper divisors (153863).

623161 is a wasteful number, since it uses less digits than its factorization.

623161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111.

The product of its digits is 216, while the sum is 19.

The square root of 623161 is about 789.4054724918. The cubic root of 623161 is about 85.4148577315.

Adding to 623161 its reverse (161326), we get a palindrome (784487).

It can be divided in two parts, 623 and 161, that added together give a square (784 = 28²).

The spelling of 623161 in words is "six hundred twenty-three thousand, one hundred sixty-one".