1672235621 has 8 divisors (see below), whose sum is σ = 1914386880. Its totient is φ = 1430899488.

The previous prime is 1672235603. The next prime is 1672235627. The reversal of 1672235621 is 1265322761.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672235621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672235627) 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, 199376 + ... + 207593.

It is an arithmetic number, because the mean of its divisors is an integer number (239298360).

Almost surely, 2^1672235621 is an apocalyptic number.

It is an amenable number.

1672235621 is a deficient number, since it is larger than the sum of its proper divisors (242151259).

1672235621 is an equidigital number, since it uses as much as digits as its factorization.

1672235621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407563.

The product of its digits is 30240, while the sum is 35.

The square root of 1672235621 is about 40892.9776489803. The cubic root of 1672235621 is about 1186.9501785019.

The spelling of 1672235621 in words is "one billion, six hundred seventy-two million, two hundred thirty-five thousand, six hundred twenty-one".