653949682 has 4 divisors (see below), whose sum is σ = 980924526. Its totient is φ = 326974840.

The previous prime is 653949679. The next prime is 653949697. The reversal of 653949682 is 286949356.

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., 538193601 + 115756081 = 23199^2 + 10759^2 .

It is a super-2 number, since 2×653949682² = 855300373175802248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163487419 + ... + 163487422.

Almost surely, 2^653949682 is an apocalyptic number.

653949682 is a deficient number, since it is larger than the sum of its proper divisors (326974844).

653949682 is a wasteful number, since it uses less digits than its factorization.

653949682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326974843.

The product of its digits is 2799360, while the sum is 52.

The square root of 653949682 is about 25572.4398914144. The cubic root of 653949682 is about 867.9901116969.

It can be divided in two parts, 65394 and 9682, that added together give a square (75076 = 274²).

The spelling of 653949682 in words is "six hundred fifty-three million, nine hundred forty-nine thousand, six hundred eighty-two".