672134401 has 8 divisors (see below), whose sum is σ = 676174824. Its totient is φ = 668104320.

The previous prime is 672134399. The next prime is 672134461. The reversal of 672134401 is 104431276.

It can be written as a sum of positive squares in 4 ways, for example, as 404975376 + 267159025 = 20124^2 + 16345^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 672134401 - 2¹ = 672134399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672134401.

It is not an unprimeable number, because it can be changed into a prime (672134461) 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, 155611 + ... + 159871.

It is an arithmetic number, because the mean of its divisors is an integer number (84521853).

Almost surely, 2^672134401 is an apocalyptic number.

It is an amenable number.

672134401 is a deficient number, since it is larger than the sum of its proper divisors (4040423).

672134401 is a wasteful number, since it uses less digits than its factorization.

672134401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 672134401 is about 25925.5549795949. The cubic root of 672134401 is about 875.9622181081.

Adding to 672134401 its reverse (104431276), we get a palindrome (776565677).

The spelling of 672134401 in words is "six hundred seventy-two million, one hundred thirty-four thousand, four hundred one".