1672667261 has 8 divisors (see below), whose sum is σ = 1786982880. Its totient is φ = 1560979728.

The previous prime is 1672667257. The next prime is 1672667273. The reversal of 1672667261 is 1627662761.

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 1672667261 - 2² = 1672667257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672667221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655706 + ... + 658251.

It is an arithmetic number, because the mean of its divisors is an integer number (223372860).

Almost surely, 2^1672667261 is an apocalyptic number.

It is an amenable number.

1672667261 is a deficient number, since it is larger than the sum of its proper divisors (114315619).

1672667261 is a wasteful number, since it uses less digits than its factorization.

1672667261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314043.

The product of its digits is 254016, while the sum is 44.

The square root of 1672667261 is about 40898.2549872241. The cubic root of 1672667261 is about 1187.0522955109.

The spelling of 1672667261 in words is "one billion, six hundred seventy-two million, six hundred sixty-seven thousand, two hundred sixty-one".