655464874 has 4 divisors (see below), whose sum is σ = 983197314. Its totient is φ = 327732436.

The previous prime is 655464871. The next prime is 655464913. The reversal of 655464874 is 478464556.

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., 365001025 + 290463849 = 19105^2 + 17043^2 .

It is not an unprimeable number, because it can be changed into a prime (655464871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163866217 + ... + 163866220.

Almost surely, 2^655464874 is an apocalyptic number.

655464874 is a deficient number, since it is larger than the sum of its proper divisors (327732440).

655464874 is a wasteful number, since it uses less digits than its factorization.

655464874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327732439.

The product of its digits is 3225600, while the sum is 49.

The square root of 655464874 is about 25602.0482383734. The cubic root of 655464874 is about 868.6599681453.

The spelling of 655464874 in words is "six hundred fifty-five million, four hundred sixty-four thousand, eight hundred seventy-four".