672381029 has 2 divisors, whose sum is σ = 672381030. Its totient is φ = 672381028.

The previous prime is 672381023. The next prime is 672381071. The reversal of 672381029 is 920183276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672364900 + 16129 = 25930^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 672381029 - 2²⁴ = 655603813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672380983 and 672381001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672381023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336190514 + 336190515.

It is an arithmetic number, because the mean of its divisors is an integer number (336190515).

Almost surely, 2^672381029 is an apocalyptic number.

It is an amenable number.

672381029 is a deficient number, since it is larger than the sum of its proper divisors (1).

672381029 is an equidigital number, since it uses as much as digits as its factorization.

672381029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 672381029 is about 25930.3110085475. The cubic root of 672381029 is about 876.0693446943.

The spelling of 672381029 in words is "six hundred seventy-two million, three hundred eighty-one thousand, twenty-nine".