623243340 has 72 divisors (see below), whose sum is σ = 1916442528. Its totient is φ = 163918080.

The previous prime is 623243329. The next prime is 623243353. The reversal of 623243340 is 43342326.

It is a happy number.

623243340 is a `hidden beast` number, since 6 + 2 + 324 + 334 + 0 = 666.

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 23 ways as a sum of consecutive naturals, for example, 10576 + ... + 36855.

Almost surely, 2^623243340 is an apocalyptic number.

623243340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623243340 is an abundant number, since it is smaller than the sum of its proper divisors (1293199188).

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

623243340 is a wasteful number, since it uses less digits than its factorization.

623243340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47519 (or 47514 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

The square root of 623243340 is about 24964.8420784110. The cubic root of 623243340 is about 854.1861960027.

Adding to 623243340 its reverse (43342326), we get a palindrome (666585666).

The spelling of 623243340 in words is "six hundred twenty-three million, two hundred forty-three thousand, three hundred forty".