672042653 has 2 divisors, whose sum is σ = 672042654. Its totient is φ = 672042652.

The previous prime is 672042611. The next prime is 672042667. The reversal of 672042653 is 356240276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 637209049 + 34833604 = 25243^2 + 5902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672042653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672042253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336021326 + 336021327.

It is an arithmetic number, because the mean of its divisors is an integer number (336021327).

Almost surely, 2^672042653 is an apocalyptic number.

It is an amenable number.

672042653 is a deficient number, since it is larger than the sum of its proper divisors (1).

672042653 is an equidigital number, since it uses as much as digits as its factorization.

672042653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 672042653 is about 25923.7854681757. The cubic root of 672042653 is about 875.9223592948.

The spelling of 672042653 in words is "six hundred seventy-two million, forty-two thousand, six hundred fifty-three".