653602834 has 4 divisors (see below), whose sum is σ = 980404254. Its totient is φ = 326801416.

The previous prime is 653602819. The next prime is 653602843. The reversal of 653602834 is 438206356.

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., 496175625 + 157427209 = 22275^2 + 12547^2 .

It is a super-2 number, since 2×653602834² = 854393329225663112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 653602793 and 653602802.

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, 163400707 + ... + 163400710.

Almost surely, 2^653602834 is an apocalyptic number.

653602834 is a deficient number, since it is larger than the sum of its proper divisors (326801420).

653602834 is a wasteful number, since it uses less digits than its factorization.

653602834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326801419.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 653602834 is about 25565.6573160167. The cubic root of 653602834 is about 867.8366269642.

The spelling of 653602834 in words is "six hundred fifty-three million, six hundred two thousand, eight hundred thirty-four".