670001667 has 16 divisors (see below), whose sum is σ = 922841088. Its totient is φ = 431936640.

The previous prime is 670001621. The next prime is 670001677. The reversal of 670001667 is 766100076.

It is not a de Polignac number, because 670001667 - 2⁷ = 670001539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (670001677) 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, 235083 + ... + 237915.

It is an arithmetic number, because the mean of its divisors is an integer number (57677568).

Almost surely, 2^670001667 is an apocalyptic number.

670001667 is a deficient number, since it is larger than the sum of its proper divisors (252839421).

670001667 is a wasteful number, since it uses less digits than its factorization.

670001667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5410.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 670001667 is about 25884.3904119838. The cubic root of 670001667 is about 875.0347379950.

The spelling of 670001667 in words is "six hundred seventy million, one thousand, six hundred sixty-seven".