672170397 has 8 divisors (see below), whose sum is σ = 896408256. Its totient is φ = 448023072.

The previous prime is 672170383. The next prime is 672170413. The reversal of 672170397 is 793071276.

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

It is not a de Polignac number, because 672170397 - 2⁷ = 672170269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672170347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2833 + ... + 36774.

It is an arithmetic number, because the mean of its divisors is an integer number (112051032).

Almost surely, 2^672170397 is an apocalyptic number.

It is an amenable number.

672170397 is a deficient number, since it is larger than the sum of its proper divisors (224237859).

672170397 is a wasteful number, since it uses less digits than its factorization.

672170397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45267.

The product of its (nonzero) digits is 111132, while the sum is 42.

The square root of 672170397 is about 25926.2491888048. The cubic root of 672170397 is about 875.9778551459.

The spelling of 672170397 in words is "six hundred seventy-two million, one hundred seventy thousand, three hundred ninety-seven".