672660001 has 12 divisors (see below), whose sum is σ = 757275988. Its totient is φ = 593914464.

The previous prime is 672659989. The next prime is 672660007. The reversal of 672660001 is 100066276.

It can be written as a sum of positive squares in 2 ways, for example, as 255520225 + 417139776 = 15985^2 + 20424^2 .

It is not a de Polignac number, because 672660001 - 2⁷ = 672659873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672660007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42030 + ... + 55783.

Almost surely, 2^672660001 is an apocalyptic number.

It is an amenable number.

672660001 is a deficient number, since it is larger than the sum of its proper divisors (84615987).

672660001 is a wasteful number, since it uses less digits than its factorization.

672660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97872 (or 97849 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 672660001 is about 25935.6897151396. The cubic root of 672660001 is about 876.1904888145.

The spelling of 672660001 in words is "six hundred seventy-two million, six hundred sixty thousand, one".