672561001 has 8 divisors (see below), whose sum is σ = 781669440. Its totient is φ = 566709648.

The previous prime is 672560981. The next prime is 672561013. The reversal of 672561001 is 100165276.

672561001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672561001 - 2⁵ = 672560969 is a prime.

It is a super-2 number, since 2×672561001² = 904676600132244002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672561401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813826 + ... + 814651.

It is an arithmetic number, because the mean of its divisors is an integer number (97708680).

Almost surely, 2^672561001 is an apocalyptic number.

It is an amenable number.

672561001 is a deficient number, since it is larger than the sum of its proper divisors (109108439).

672561001 is a wasteful number, since it uses less digits than its factorization.

672561001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628543.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 672561001 is about 25933.7810779686. The cubic root of 672561001 is about 876.1475017115.

The spelling of 672561001 in words is "six hundred seventy-two million, five hundred sixty-one thousand, one".