623257340 has 12 divisors (see below), whose sum is σ = 1308840456. Its totient is φ = 249302928.

The previous prime is 623257331. The next prime is 623257363. The reversal of 623257340 is 43752326.

623257340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 623257297 and 623257306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15581414 + ... + 15581453.

It is an arithmetic number, because the mean of its divisors is an integer number (109070038).

Almost surely, 2^623257340 is an apocalyptic number.

It is an amenable number.

623257340 is an abundant number, since it is smaller than the sum of its proper divisors (685583116).

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

623257340 is a wasteful number, since it uses less digits than its factorization.

623257340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31162876 (or 31162874 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 623257340 is about 24965.1224711596. The cubic root of 623257340 is about 854.1925918551.

The spelling of 623257340 in words is "six hundred twenty-three million, two hundred fifty-seven thousand, three hundred forty".