1667425667 has 8 divisors (see below), whose sum is σ = 1695559632. Its totient is φ = 1639317600.

The previous prime is 1667425657. The next prime is 1667425681. The reversal of 1667425667 is 7665247661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1667425667 - 2²⁴ = 1650648451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1667425657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158192 + ... + 168402.

It is an arithmetic number, because the mean of its divisors is an integer number (211944954).

Almost surely, 2^1667425667 is an apocalyptic number.

1667425667 is a deficient number, since it is larger than the sum of its proper divisors (28133965).

1667425667 is a wasteful number, since it uses less digits than its factorization.

1667425667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949.

The product of its digits is 2540160, while the sum is 50.

The square root of 1667425667 is about 40834.1238059543. The cubic root of 1667425667 is about 1185.8110530630.

The spelling of 1667425667 in words is "one billion, six hundred sixty-seven million, four hundred twenty-five thousand, six hundred sixty-seven".