672896545 has 4 divisors (see below), whose sum is σ = 807475860. Its totient is φ = 538317232.

The previous prime is 672896503. The next prime is 672896557. The reversal of 672896545 is 545698276.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106646929 + 566249616 = 10327^2 + 23796^2 .

It is a cyclic number.

It is not a de Polignac number, because 672896545 - 2⁷ = 672896417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 672896492 and 672896501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67289650 + ... + 67289659.

It is an arithmetic number, because the mean of its divisors is an integer number (201868965).

Almost surely, 2^672896545 is an apocalyptic number.

It is an amenable number.

672896545 is a deficient number, since it is larger than the sum of its proper divisors (134579315).

672896545 is a wasteful number, since it uses less digits than its factorization.

672896545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134579314.

The product of its digits is 3628800, while the sum is 52.

The square root of 672896545 is about 25940.2495169187. The cubic root of 672896545 is about 876.2931822570.

The spelling of 672896545 in words is "six hundred seventy-two million, eight hundred ninety-six thousand, five hundred forty-five".