205412623 has 8 divisors (see below), whose sum is σ = 223700400. Its totient is φ = 187480128.

The previous prime is 205412611. The next prime is 205412653. The reversal of 205412623 is 326214502.

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 205412623 - 2¹³ = 205404431 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 (205412653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87613 + ... + 89926.

It is an arithmetic number, because the mean of its divisors is an integer number (27962550).

Almost surely, 2^205412623 is an apocalyptic number.

205412623 is a deficient number, since it is larger than the sum of its proper divisors (18287777).

205412623 is a wasteful number, since it uses less digits than its factorization.

205412623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177641.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 205412623 is about 14332.2232399583. The cubic root of 205412623 is about 590.0321949299.

The spelling of 205412623 in words is "two hundred five million, four hundred twelve thousand, six hundred twenty-three".