6657401224 has 16 divisors (see below), whose sum is σ = 12554783820. Its totient is φ = 3309458880.

The previous prime is 6657401183. The next prime is 6657401227. The reversal of 6657401224 is 4221047566.

It can be written as a sum of positive squares in 2 ways, for example, as 4667349124 + 1990052100 = 68318^2 + 44610^2 .

It is not an unprimeable number, because it can be changed into a prime (6657401227) 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, 2403747 + ... + 2406514.

Almost surely, 2^6657401224 is an apocalyptic number.

It is an amenable number.

6657401224 is a deficient number, since it is larger than the sum of its proper divisors (5897382596).

6657401224 is a wasteful number, since it uses less digits than its factorization.

6657401224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4810440 (or 4810436 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 6657401224 is about 81592.8993479212. The cubic root of 6657401224 is about 1881.1997419803.

The spelling of 6657401224 in words is "six billion, six hundred fifty-seven million, four hundred one thousand, two hundred twenty-four".