672090 has 32 divisors (see below), whose sum is σ = 1653696. Its totient is φ = 174720.

The previous prime is 672079. The next prime is 672097. The reversal of 672090 is 90276.

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 672090.

It is not an unprimeable number, because it can be changed into a prime (672097) by changing a digit.

672090 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1030 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (51678).

2⁶⁷²⁰⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826848).

672090 is an abundant number, since it is smaller than the sum of its proper divisors (981606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672090 is a wasteful number, since it uses less digits than its factorization.

672090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 672090 is about 819.8109538180. The cubic root of 672090 is about 87.5942929082.

The spelling of 672090 in words is "six hundred seventy-two thousand, ninety".