654693923 has 4 divisors (see below), whose sum is σ = 705055008. Its totient is φ = 604332840.

The previous prime is 654693899. The next prime is 654693959. The reversal of 654693923 is 329396456.

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 654693923 - 2⁶ = 654693859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654693983) 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, 25180523 + ... + 25180548.

It is an arithmetic number, because the mean of its divisors is an integer number (176263752).

Almost surely, 2^654693923 is an apocalyptic number.

654693923 is a deficient number, since it is larger than the sum of its proper divisors (50361085).

654693923 is a wasteful number, since it uses less digits than its factorization.

654693923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50361084.

The product of its digits is 1049760, while the sum is 47.

The square root of 654693923 is about 25586.9873763990. The cubic root of 654693923 is about 868.3192649122.

The spelling of 654693923 in words is "six hundred fifty-four million, six hundred ninety-three thousand, nine hundred twenty-three".