654441026 has 4 divisors (see below), whose sum is σ = 981661542. Its totient is φ = 327220512.

The previous prime is 654440989. The next prime is 654441071. The reversal of 654441026 is 620144456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 451350025 + 203091001 = 21245^2 + 14251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654440983 and 654441001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163610255 + ... + 163610258.

Almost surely, 2^654441026 is an apocalyptic number.

654441026 is a deficient number, since it is larger than the sum of its proper divisors (327220516).

654441026 is a wasteful number, since it uses less digits than its factorization.

654441026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327220515.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 654441026 is about 25582.0449925333. The cubic root of 654441026 is about 868.2074449146.

The spelling of 654441026 in words is "six hundred fifty-four million, four hundred forty-one thousand, twenty-six".