755665923 has 18 divisors (see below), whose sum is σ = 1028745484. Its totient is φ = 493397648.

The previous prime is 755665909. The next prime is 755665927. The reversal of 755665923 is 329566557.

It is not a de Polignac number, because 755665923 - 2¹² = 755661827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (755665927) 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 17 ways as a sum of consecutive naturals, for example, 2809033 + ... + 2809301.

Almost surely, 2^755665923 is an apocalyptic number.

755665923 is a deficient number, since it is larger than the sum of its proper divisors (273079561).

755665923 is an frugal number, since it uses more digits than its factorization.

755665923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 331 counting only the distinct ones).

The product of its digits is 1701000, while the sum is 48.

The square root of 755665923 is about 27489.3783669257. The cubic root of 755665923 is about 910.8424846844.

Multiplying 755665923 by its sum of digits (48), we get a square (36271964304 = 190452²).

The spelling of 755665923 in words is "seven hundred fifty-five million, six hundred sixty-five thousand, nine hundred twenty-three".