672537601 has 2 divisors, whose sum is σ = 672537602. Its totient is φ = 672537600.

The previous prime is 672537599. The next prime is 672537611. The reversal of 672537601 is 106735276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592971201 + 79566400 = 24351^2 + 8920^2 .

It is a cyclic number.

It is not a de Polignac number, because 672537601 - 2¹ = 672537599 is a prime.

Together with 672537599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (672537611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336268800 + 336268801.

It is an arithmetic number, because the mean of its divisors is an integer number (336268801).

Almost surely, 2^672537601 is an apocalyptic number.

It is an amenable number.

672537601 is a deficient number, since it is larger than the sum of its proper divisors (1).

672537601 is an equidigital number, since it uses as much as digits as its factorization.

672537601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 672537601 is about 25933.3299250212. The cubic root of 672537601 is about 876.1373405071.

The spelling of 672537601 in words is "six hundred seventy-two million, five hundred thirty-seven thousand, six hundred one".