623670 has 16 divisors (see below), whose sum is σ = 1496880. Its totient is φ = 166304.

The previous prime is 623669. The next prime is 623671. The reversal of 623670 is 76326.

It is an interprime number because it is at equal distance from previous prime (623669) and next prime (623671).

It is a self number, because there is not a number n which added to its sum of digits gives 623670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623671) 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, 10365 + ... + 10424.

It is an arithmetic number, because the mean of its divisors is an integer number (93555).

2⁶²³⁶⁷⁰ is an apocalyptic number.

623670 is an abundant number, since it is smaller than the sum of its proper divisors (873210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623670 is a wasteful number, since it uses less digits than its factorization.

623670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20799.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 623670 is about 789.7278012075. The cubic root of 623670 is about 85.4381071170.

Adding to 623670 its reverse (76326), we get a palindrome (699996).

The spelling of 623670 in words is "six hundred twenty-three thousand, six hundred seventy".