623380665600 has 3240 divisors, whose sum is σ = 3083623760448. Its totient is φ = 122624409600.

The previous prime is 623380665541. The next prime is 623380665647. The reversal of 623380665600 is 6566083326.

623380665600 is a `hidden beast` number, since 6 + 2 + 3 + 3 + 80 + 6 + 6 + 560 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 6426604752 + ... + 6426604848.

Almost surely, 2^623380665600 is an apocalyptic number.

623380665600 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 623380665600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541811880224).

623380665600 is an abundant number, since it is smaller than the sum of its proper divisors (2460243094848).

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

623380665600 is a wasteful number, since it uses less digits than its factorization.

623380665600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 623380665600 in words is "six hundred twenty-three billion, three hundred eighty million, six hundred sixty-five thousand, six hundred".