672801667 has 4 divisors (see below), whose sum is σ = 676287880. Its totient is φ = 669315456.

The previous prime is 672801659. The next prime is 672801697. The reversal of 672801667 is 766108276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672801667 - 2³ = 672801659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672801617) 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 3 ways as a sum of consecutive naturals, for example, 1742817 + ... + 1743202.

It is an arithmetic number, because the mean of its divisors is an integer number (169071970).

Almost surely, 2^672801667 is an apocalyptic number.

672801667 is a deficient number, since it is larger than the sum of its proper divisors (3486213).

672801667 is a wasteful number, since it uses less digits than its factorization.

672801667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486212.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 672801667 is about 25938.4206728166. The cubic root of 672801667 is about 876.2519947207.

The spelling of 672801667 in words is "six hundred seventy-two million, eight hundred one thousand, six hundred sixty-seven".