623732785784340 has 192 divisors, whose sum is σ = 1771147855104768. Its totient is φ = 163994112921600.

The previous prime is 623732785784279. The next prime is 623732785784347. The reversal of 623732785784340 is 43487587237326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623732785784347) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3111391710 + ... + 3111592170.

It is an arithmetic number, because the mean of its divisors is an integer number (9224728412004).

Almost surely, 2^{623732785784340} is an apocalyptic number.

623732785784340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623732785784340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885573927552384).

623732785784340 is an abundant number, since it is smaller than the sum of its proper divisors (1147415069320428).

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

623732785784340 is a wasteful number, since it uses less digits than its factorization.

623732785784340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203178 (or 203176 counting only the distinct ones).

The product of its (nonzero) digits is 1137991680, while the sum is 69.

The spelling of 623732785784340 in words is "six hundred twenty-three trillion, seven hundred thirty-two billion, seven hundred eighty-five million, seven hundred eighty-four thousand, three hundred forty".