623400973 has 8 divisors (see below), whose sum is σ = 675108000. Its totient is φ = 572230128.

The previous prime is 623400959. The next prime is 623400989. The reversal of 623400973 is 379004326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 623400973 - 2²¹ = 621303821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623400913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131623 + ... + 136276.

It is an arithmetic number, because the mean of its divisors is an integer number (84388500).

Almost surely, 2^623400973 is an apocalyptic number.

It is an amenable number.

623400973 is a deficient number, since it is larger than the sum of its proper divisors (51707027).

623400973 is a wasteful number, since it uses less digits than its factorization.

623400973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268091.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 623400973 is about 24967.9989786927. The cubic root of 623400973 is about 854.2582045713.

The spelling of 623400973 in words is "six hundred twenty-three million, four hundred thousand, nine hundred seventy-three".