672530 has 16 divisors (see below), whose sum is σ = 1223640. Its totient is φ = 266112.

The previous prime is 672521. The next prime is 672557. The reversal of 672530 is 35276.

It can be written as a sum of positive squares in 4 ways, for example, as 413449 + 259081 = 643^2 + 509^2 .

It is a junction number, because it is equal to n+sod(n) for n = 672496 and 672505.

It is an unprimeable number.

672530 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 782 + ... + 1398.

2⁶⁷²⁵³⁰ is an apocalyptic number.

672530 is a deficient number, since it is larger than the sum of its proper divisors (551110).

672530 is a wasteful number, since it uses less digits than its factorization.

672530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 672530 is about 820.0792644617. The cubic root of 672530 is about 87.6134039802.

The spelling of 672530 in words is "six hundred seventy-two thousand, five hundred thirty".