1667297960 has 16 divisors (see below), whose sum is σ = 3751420500. Its totient is φ = 666919168.

The previous prime is 1667297939. The next prime is 1667297963. The reversal of 1667297960 is 697927661.

It can be written as a sum of positive squares in 2 ways, for example, as 1564518916 + 102779044 = 39554^2 + 10138^2 .

It is not an unprimeable number, because it can be changed into a prime (1667297963) 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, 20841185 + ... + 20841264.

Almost surely, 2^1667297960 is an apocalyptic number.

1667297960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1667297960 is an abundant number, since it is smaller than the sum of its proper divisors (2084122540).

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

1667297960 is a wasteful number, since it uses less digits than its factorization.

1667297960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41682460 (or 41682456 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 53.

The square root of 1667297960 is about 40832.5600470997. The cubic root of 1667297960 is about 1185.7807788023.

The spelling of 1667297960 in words is "one billion, six hundred sixty-seven million, two hundred ninety-seven thousand, nine hundred sixty".