623078123 has 4 divisors (see below), whose sum is σ = 634834368. Its totient is φ = 611321880.

The previous prime is 623078089. The next prime is 623078161. The reversal of 623078123 is 321870326.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 623078123 - 2⁶ = 623078059 is a prime.

It is a super-2 number, since 2×623078123² = 776452694722406258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623078123.

It is not an unprimeable number, because it can be changed into a prime (623078023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5878043 + ... + 5878148.

It is an arithmetic number, because the mean of its divisors is an integer number (158708592).

Almost surely, 2^623078123 is an apocalyptic number.

623078123 is a deficient number, since it is larger than the sum of its proper divisors (11756245).

623078123 is a wasteful number, since it uses less digits than its factorization.

623078123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11756244.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 623078123 is about 24961.5328655914. The cubic root of 623078123 is about 854.1107099424.

The spelling of 623078123 in words is "six hundred twenty-three million, seventy-eight thousand, one hundred twenty-three".