623789340 has 48 divisors (see below), whose sum is σ = 1748856480. Its totient is φ = 166129920.

The previous prime is 623789339. The next prime is 623789357. The reversal of 623789340 is 43987326.

It is a super-2 number, since 2×623789340² = 778226281395271200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 623789292 and 623789301.

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 15 ways as a sum of consecutive naturals, for example, 43470 + ... + 56010.

It is an arithmetic number, because the mean of its divisors is an integer number (36434510).

Almost surely, 2^623789340 is an apocalyptic number.

623789340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623789340 is an abundant number, since it is smaller than the sum of its proper divisors (1125067140).

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

623789340 is a wasteful number, since it uses less digits than its factorization.

623789340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382 (or 13380 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 623789340 is about 24975.7750630486. The cubic root of 623789340 is about 854.4355633070.

The spelling of 623789340 in words is "six hundred twenty-three million, seven hundred eighty-nine thousand, three hundred forty".