1670647056 has 40 divisors (see below), whose sum is σ = 4647827520. Its totient is φ = 514045056.

The previous prime is 1670647037. The next prime is 1670647057. The reversal of 1670647056 is 6507460761.

It is a junction number, because it is equal to n+sod(n) for n = 1670646999 and 1670647017.

It is not an unprimeable number, because it can be changed into a prime (1670647057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338036 + ... + 1339283.

It is an arithmetic number, because the mean of its divisors is an integer number (116195688).

Almost surely, 2^1670647056 is an apocalyptic number.

1670647056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1670647056 is an abundant number, since it is smaller than the sum of its proper divisors (2977180464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1670647056 is a wasteful number, since it uses less digits than its factorization.

1670647056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677343 (or 2677337 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 1670647056 is about 40873.5495889457. The cubic root of 1670647056 is about 1186.5742057881.

The spelling of 1670647056 in words is "one billion, six hundred seventy million, six hundred forty-seven thousand, fifty-six".