68623380 has 144 divisors (see below), whose sum is σ = 240589440. Its totient is φ = 15508224.

The previous prime is 68623363. The next prime is 68623411. The reversal of 68623380 is 8332686.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134566 + ... + 135074.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^68623380 is an apocalyptic number.

68623380 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 68623380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120294720).

68623380 is an abundant number, since it is smaller than the sum of its proper divisors (171966060).

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

68623380 is a wasteful number, since it uses less digits than its factorization.

68623380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 68623380 is about 8283.9229837077. The cubic root of 68623380 is about 409.4089838734.

The spelling of 68623380 in words is "sixty-eight million, six hundred twenty-three thousand, three hundred eighty".