654821674 has 16 divisors (see below), whose sum is σ = 1120012488. Its totient is φ = 284447232.

The previous prime is 654821669. The next prime is 654821689. The reversal of 654821674 is 476128456.

It can be written as a sum of positive squares in 4 ways, for example, as 570971025 + 83850649 = 23895^2 + 9157^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 654821674.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740307 + ... + 741190.

Almost surely, 2^654821674 is an apocalyptic number.

654821674 is a deficient number, since it is larger than the sum of its proper divisors (465190814).

654821674 is a wasteful number, since it uses less digits than its factorization.

654821674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481529.

The product of its digits is 322560, while the sum is 43.

The square root of 654821674 is about 25589.4836602851. The cubic root of 654821674 is about 868.3757398725.

The spelling of 654821674 in words is "six hundred fifty-four million, eight hundred twenty-one thousand, six hundred seventy-four".