623740 has 24 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 230208.

The previous prime is 623729. The next prime is 623743. The reversal of 623740 is 47326.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623743) 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, 940 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2⁶²³⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

623740 is an abundant number, since it is smaller than the sum of its proper divisors (787460).

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

623740 is a wasteful number, since it uses less digits than its factorization.

623740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 623740 is about 789.7721190318. The cubic root of 623740 is about 85.4413034888.

The spelling of 623740 in words is "six hundred twenty-three thousand, seven hundred forty".