655166254 has 4 divisors (see below), whose sum is σ = 982749384. Its totient is φ = 327583126.

The previous prime is 655166251. The next prime is 655166273. The reversal of 655166254 is 452661556.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655166251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163791562 + ... + 163791565.

It is an arithmetic number, because the mean of its divisors is an integer number (245687346).

Almost surely, 2^655166254 is an apocalyptic number.

655166254 is a deficient number, since it is larger than the sum of its proper divisors (327583130).

655166254 is a wasteful number, since it uses less digits than its factorization.

655166254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327583129.

The product of its digits is 216000, while the sum is 40.

The square root of 655166254 is about 25596.2156187199. The cubic root of 655166254 is about 868.5280319410.

The spelling of 655166254 in words is "six hundred fifty-five million, one hundred sixty-six thousand, two hundred fifty-four".