672870437 has 2 divisors, whose sum is σ = 672870438. Its totient is φ = 672870436.

The previous prime is 672870403. The next prime is 672870439. The reversal of 672870437 is 734078276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671898241 + 972196 = 25921^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 672870437 - 2²² = 668676133 is a prime.

Together with 672870439, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672870439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336435218 + 336435219.

It is an arithmetic number, because the mean of its divisors is an integer number (336435219).

Almost surely, 2^672870437 is an apocalyptic number.

It is an amenable number.

672870437 is a deficient number, since it is larger than the sum of its proper divisors (1).

672870437 is an equidigital number, since it uses as much as digits as its factorization.

672870437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 672870437 is about 25939.7462786358. The cubic root of 672870437 is about 876.2818488861.

The spelling of 672870437 in words is "six hundred seventy-two million, eight hundred seventy thousand, four hundred thirty-seven".