1667020023 has 12 divisors (see below), whose sum is σ = 2415664368. Its totient is φ = 1107771360.

The previous prime is 1667019997. The next prime is 1667020027. The reversal of 1667020023 is 3200207661.

It is a happy number.

It is not a de Polignac number, because 1667020023 - 2²⁵ = 1633465591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294990 + ... + 300587.

It is an arithmetic number, because the mean of its divisors is an integer number (201305364).

Almost surely, 2^1667020023 is an apocalyptic number.

1667020023 is a deficient number, since it is larger than the sum of its proper divisors (748644345).

1667020023 is a wasteful number, since it uses less digits than its factorization.

1667020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595894 (or 595891 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1667020023 is about 40829.1565305971. The cubic root of 1667020023 is about 1185.7148856276.

Adding to 1667020023 its reverse (3200207661), we get a palindrome (4867227684).

The spelling of 1667020023 in words is "one billion, six hundred sixty-seven million, twenty thousand, twenty-three".