657224542 has 16 divisors (see below), whose sum is σ = 1075112640. Its totient is φ = 299493792.

The previous prime is 657224537. The next prime is 657224543. The reversal of 657224542 is 245422756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657224543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157933 + ... + 162040.

It is an arithmetic number, because the mean of its divisors is an integer number (67194540).

Almost surely, 2^657224542 is an apocalyptic number.

657224542 is a deficient number, since it is larger than the sum of its proper divisors (417888098).

657224542 is a wasteful number, since it uses less digits than its factorization.

657224542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320067.

The product of its digits is 134400, while the sum is 37.

The square root of 657224542 is about 25636.3909706495. The cubic root of 657224542 is about 869.4366115064.

The spelling of 657224542 in words is "six hundred fifty-seven million, two hundred twenty-four thousand, five hundred forty-two".