672577889 has 8 divisors (see below), whose sum is σ = 696465000. Its totient is φ = 648737152.

The previous prime is 672577879. The next prime is 672577901. The reversal of 672577889 is 988775276.

It can be written as a sum of positive squares in 4 ways, for example, as 115240225 + 557337664 = 10735^2 + 23608^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672577889 is a prime.

It is a super-2 number, since 2×672577889² = 904722033543392642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672577819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19367 + ... + 41475.

It is an arithmetic number, because the mean of its divisors is an integer number (87058125).

Almost surely, 2^672577889 is an apocalyptic number.

It is an amenable number.

672577889 is a deficient number, since it is larger than the sum of its proper divisors (23887111).

672577889 is a wasteful number, since it uses less digits than its factorization.

672577889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23187.

The product of its digits is 11854080, while the sum is 59.

The square root of 672577889 is about 25934.1066744162. The cubic root of 672577889 is about 876.1548350018.

The spelling of 672577889 in words is "six hundred seventy-two million, five hundred seventy-seven thousand, eight hundred eighty-nine".