654340634 has 16 divisors (see below), whose sum is σ = 1010277576. Its totient is φ = 317620800.

The previous prime is 654340613. The next prime is 654340651. The reversal of 654340634 is 436043456.

It can be written as a sum of positive squares in 4 ways, for example, as 645007609 + 9333025 = 25397^2 + 3055^2 .

It is a junction number, because it is equal to n+sod(n) for n = 654340594 and 654340603.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24524 + ... + 43704.

Almost surely, 2^654340634 is an apocalyptic number.

654340634 is a deficient number, since it is larger than the sum of its proper divisors (355936942).

654340634 is a wasteful number, since it uses less digits than its factorization.

654340634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19681.

The product of its (nonzero) digits is 103680, while the sum is 35.

The square root of 654340634 is about 25580.0827598348. The cubic root of 654340634 is about 868.1630479735.

The spelling of 654340634 in words is "six hundred fifty-four million, three hundred forty thousand, six hundred thirty-four".