660283057 has 16 divisors (see below), whose sum is σ = 799183872. Its totient is φ = 533261520.

The previous prime is 660283037. The next prime is 660283061. The reversal of 660283057 is 750382066.

It is a cyclic number.

It is not a de Polignac number, because 660283057 - 2⁷ = 660282929 is a prime.

It is a super-2 number, since 2×660283057² = 871947430722530498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660283007) 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 15 ways as a sum of consecutive naturals, for example, 19819 + ... + 41392.

It is an arithmetic number, because the mean of its divisors is an integer number (49948992).

Almost surely, 2^660283057 is an apocalyptic number.

660283057 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

660283057 is a deficient number, since it is larger than the sum of its proper divisors (138900815).

660283057 is a wasteful number, since it uses less digits than its factorization.

660283057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61308.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 660283057 is about 25695.9735561819. The cubic root of 660283057 is about 870.7832190346.

Subtracting 660283057 from its reverse (750382066), we obtain a palindrome (90099009).

The spelling of 660283057 in words is "six hundred sixty million, two hundred eighty-three thousand, fifty-seven".