652577668 has 6 divisors (see below), whose sum is σ = 1142010926. Its totient is φ = 326288832.

The previous prime is 652577647. The next prime is 652577677. The reversal of 652577668 is 866775256.

It can be written as a sum of positive squares in only one way, i.e., 346257664 + 306320004 = 18608^2 + 17502^2 .

It is a super-2 number, since 2×652577668² = 851715225544636448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81572205 + ... + 81572212.

Almost surely, 2^652577668 is an apocalyptic number.

It is an amenable number.

652577668 is a deficient number, since it is larger than the sum of its proper divisors (489433258).

652577668 is a wasteful number, since it uses less digits than its factorization.

652577668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163144421 (or 163144419 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The square root of 652577668 is about 25545.5997776525. The cubic root of 652577668 is about 867.3826600641.

The spelling of 652577668 in words is "six hundred fifty-two million, five hundred seventy-seven thousand, six hundred sixty-eight".