655116801 has 4 divisors (see below), whose sum is σ = 873489072. Its totient is φ = 436744532.

The previous prime is 655116799. The next prime is 655116823. The reversal of 655116801 is 108611556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655116801 - 2¹ = 655116799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655116841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109186131 + ... + 109186136.

It is an arithmetic number, because the mean of its divisors is an integer number (218372268).

Almost surely, 2^655116801 is an apocalyptic number.

It is an amenable number.

655116801 is a deficient number, since it is larger than the sum of its proper divisors (218372271).

655116801 is a wasteful number, since it uses less digits than its factorization.

655116801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218372270.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 655116801 is about 25595.2495787793. The cubic root of 655116801 is about 868.5061787614.

The spelling of 655116801 in words is "six hundred fifty-five million, one hundred sixteen thousand, eight hundred one".