655136402 has 4 divisors (see below), whose sum is σ = 982704606. Its totient is φ = 327568200.

The previous prime is 655136369. The next prime is 655136407. The reversal of 655136402 is 204631556.

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., 539121961 + 116014441 = 23219^2 + 10771^2 .

It is not an unprimeable number, because it can be changed into a prime (655136407) by changing a digit.

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, 163784099 + ... + 163784102.

Almost surely, 2^655136402 is an apocalyptic number.

655136402 is a deficient number, since it is larger than the sum of its proper divisors (327568204).

655136402 is a wasteful number, since it uses less digits than its factorization.

655136402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327568203.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 655136402 is about 25595.6324789992. The cubic root of 655136402 is about 868.5148405348.

Adding to 655136402 its reverse (204631556), we get a palindrome (859767958).

The spelling of 655136402 in words is "six hundred fifty-five million, one hundred thirty-six thousand, four hundred two".