623532340 has 24 divisors (see below), whose sum is σ = 1310510880. Its totient is φ = 249204768.

The previous prime is 623532337. The next prime is 623532353. The reversal of 623532340 is 43235326.

It is a junction number, because it is equal to n+sod(n) for n = 623532299 and 623532308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12799 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (54604620).

Almost surely, 2^623532340 is an apocalyptic number.

It is an amenable number.

623532340 is an abundant number, since it is smaller than the sum of its proper divisors (686978540).

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

623532340 is a wasteful number, since it uses less digits than its factorization.

623532340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26031 (or 26029 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 623532340 is about 24970.6295475304. The cubic root of 623532340 is about 854.3182052560.

Adding to 623532340 its reverse (43235326), we get a palindrome (666767666).

The spelling of 623532340 in words is "six hundred twenty-three million, five hundred thirty-two thousand, three hundred forty".