623866440960 has 576 divisors, whose sum is σ = 2663309107200. Its totient is φ = 135091888128.

The previous prime is 623866440947. The next prime is 623866440973. The reversal of 623866440960 is 69044668326.

623866440960 is a `hidden beast` number, since 62 + 3 + 86 + 6 + 440 + 9 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (623866440947) and next prime (623866440973).

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 623866440897 and 623866440906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4528617 + ... + 4664343.

Almost surely, 2^623866440960 is an apocalyptic number.

623866440960 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 623866440960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1331654553600).

623866440960 is an abundant number, since it is smaller than the sum of its proper divisors (2039442666240).

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

623866440960 is a wasteful number, since it uses less digits than its factorization.

623866440960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135783 (or 135763 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 623866440960 in words is "six hundred twenty-three billion, eight hundred sixty-six million, four hundred forty thousand, nine hundred sixty".