672256805 has 8 divisors (see below), whose sum is σ = 880045344. Its totient is φ = 488914000.

The previous prime is 672256799. The next prime is 672256829. The reversal of 672256805 is 508652276.

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

It is not a de Polignac number, because 672256805 - 2¹⁰ = 672255781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6111371 + ... + 6111480.

It is an arithmetic number, because the mean of its divisors is an integer number (110005668).

Almost surely, 2^672256805 is an apocalyptic number.

It is an amenable number.

672256805 is a deficient number, since it is larger than the sum of its proper divisors (207788539).

672256805 is a wasteful number, since it uses less digits than its factorization.

672256805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222867.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 672256805 is about 25927.9155544753. The cubic root of 672256805 is about 876.0153894039.

The spelling of 672256805 in words is "six hundred seventy-two million, two hundred fifty-six thousand, eight hundred five".