672667403 has 2 divisors, whose sum is σ = 672667404. Its totient is φ = 672667402.

The previous prime is 672667399. The next prime is 672667409. The reversal of 672667403 is 304766276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672667403 - 2² = 672667399 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672667409) 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, 336333701 + 336333702.

It is an arithmetic number, because the mean of its divisors is an integer number (336333702).

Almost surely, 2^672667403 is an apocalyptic number.

672667403 is a deficient number, since it is larger than the sum of its proper divisors (1).

672667403 is an equidigital number, since it uses as much as digits as its factorization.

672667403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 672667403 is about 25935.8324138633. The cubic root of 672667403 is about 876.1937026908.

The spelling of 672667403 in words is "six hundred seventy-two million, six hundred sixty-seven thousand, four hundred three".