655660022 has 4 divisors (see below), whose sum is σ = 983490036. Its totient is φ = 327830010.

The previous prime is 655660007. The next prime is 655660039. The reversal of 655660022 is 220066556.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163915004 + ... + 163915007.

It is an arithmetic number, because the mean of its divisors is an integer number (245872509).

Almost surely, 2^655660022 is an apocalyptic number.

655660022 is a deficient number, since it is larger than the sum of its proper divisors (327830014).

655660022 is a wasteful number, since it uses less digits than its factorization.

655660022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327830013.

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

The square root of 655660022 is about 25605.8591341904. The cubic root of 655660022 is about 868.7461667308.

The spelling of 655660022 in words is "six hundred fifty-five million, six hundred sixty thousand, twenty-two".