654738243 has 16 divisors (see below), whose sum is σ = 883474560. Its totient is φ = 431269056.

The previous prime is 654738239. The next prime is 654738299. The reversal of 654738243 is 342837456.

It is not a de Polignac number, because 654738243 - 2² = 654738239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 654738195 and 654738204.

It is not an unprimeable number, because it can be changed into a prime (654738223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128796 + ... + 133782.

It is an arithmetic number, because the mean of its divisors is an integer number (55217160).

Almost surely, 2^654738243 is an apocalyptic number.

654738243 is a deficient number, since it is larger than the sum of its proper divisors (228736317).

654738243 is a wasteful number, since it uses less digits than its factorization.

654738243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5506.

The product of its digits is 483840, while the sum is 42.

The square root of 654738243 is about 25587.8534269680. The cubic root of 654738243 is about 868.3388583130.

The spelling of 654738243 in words is "six hundred fifty-four million, seven hundred thirty-eight thousand, two hundred forty-three".