623999376 has 600 divisors, whose sum is σ = 2504107584. Its totient is φ = 145566720.

The previous prime is 623999357. The next prime is 623999393. The reversal of 623999376 is 673999326.

It is a happy number.

623999376 is a `hidden beast` number, since 623 + 9 + 9 + 9 + 3 + 7 + 6 = 666.

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

It is a nude number because it is divisible by every one of its digits.

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 119 ways as a sum of consecutive naturals, for example, 16864830 + ... + 16864866.

Almost surely, 2^623999376 is an apocalyptic number.

623999376 is a gapful number since it is divisible by the number (66) 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 623999376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252053792).

623999376 is an abundant number, since it is smaller than the sum of its proper divisors (1880108208).

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

623999376 is a wasteful number, since it uses less digits than its factorization.

623999376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 73 counting only the distinct ones).

The product of its digits is 3306744, while the sum is 54.

The square root of 623999376 is about 24979.9795035945. The cubic root of 623999376 is about 854.5314514956.

It can be divided in two parts, 623 and 999376, that added together give a palindrome (999999).

The spelling of 623999376 in words is "six hundred twenty-three million, nine hundred ninety-nine thousand, three hundred seventy-six".