672671563 has 2 divisors, whose sum is σ = 672671564. Its totient is φ = 672671562.

The previous prime is 672671533. The next prime is 672671579. The reversal of 672671563 is 365176276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672671563 - 2¹³ = 672663371 is a prime.

It is not a weakly prime, because it can be changed into another prime (672671533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336335781 + 336335782.

It is an arithmetic number, because the mean of its divisors is an integer number (336335782).

Almost surely, 2^672671563 is an apocalyptic number.

672671563 is a deficient number, since it is larger than the sum of its proper divisors (1).

672671563 is an equidigital number, since it uses as much as digits as its factorization.

672671563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The square root of 672671563 is about 25935.9126116665. The cubic root of 672671563 is about 876.1955089120.

The spelling of 672671563 in words is "six hundred seventy-two million, six hundred seventy-one thousand, five hundred sixty-three".