672170451 has 4 divisors (see below), whose sum is σ = 896227272. Its totient is φ = 448113632.

The previous prime is 672170431. The next prime is 672170461. The reversal of 672170451 is 154071276.

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 672170451 - 2¹⁰ = 672169427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672170431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112028406 + ... + 112028411.

It is an arithmetic number, because the mean of its divisors is an integer number (224056818).

Almost surely, 2^672170451 is an apocalyptic number.

672170451 is a deficient number, since it is larger than the sum of its proper divisors (224056821).

672170451 is a wasteful number, since it uses less digits than its factorization.

672170451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224056820.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 672170451 is about 25926.2502302203. The cubic root of 672170451 is about 875.9778786036.

The spelling of 672170451 in words is "six hundred seventy-two million, one hundred seventy thousand, four hundred fifty-one".