654971228 has 24 divisors (see below), whose sum is σ = 1178568384. Its totient is φ = 318297600.

The previous prime is 654971221. The next prime is 654971281. The reversal of 654971228 is 822179456.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654971221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37076 + ... + 51812.

It is an arithmetic number, because the mean of its divisors is an integer number (49107016).

Almost surely, 2^654971228 is an apocalyptic number.

It is an amenable number.

654971228 is a deficient number, since it is larger than the sum of its proper divisors (523597156).

654971228 is a wasteful number, since it uses less digits than its factorization.

654971228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15053 (or 15051 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 654971228 is about 25592.4056704328. The cubic root of 654971228 is about 868.4418439661.

It can be divided in two parts, 6549 and 71228, that added together give a palindrome (77777).

The spelling of 654971228 in words is "six hundred fifty-four million, nine hundred seventy-one thousand, two hundred twenty-eight".