655670650 has 12 divisors (see below), whose sum is σ = 1219547502. Its totient is φ = 262268240.

The previous prime is 655670623. The next prime is 655670651. The reversal of 655670650 is 56076556.

It can be written as a sum of positive squares in 3 ways, for example, as 472149441 + 183521209 = 21729^2 + 13547^2 .

It is not an unprimeable number, because it can be changed into a prime (655670651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6556657 + ... + 6556756.

Almost surely, 2^655670650 is an apocalyptic number.

655670650 is a deficient number, since it is larger than the sum of its proper divisors (563876852).

655670650 is a wasteful number, since it uses less digits than its factorization.

655670650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13113425 (or 13113420 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 655670650 is about 25606.0666639763. The cubic root of 655670650 is about 868.7508607206.

The spelling of 655670650 in words is "six hundred fifty-five million, six hundred seventy thousand, six hundred fifty".