672749441 has 8 divisors (see below), whose sum is σ = 827999424. Its totient is φ = 532285200.

The previous prime is 672749431. The next prime is 672749461. The reversal of 672749441 is 144947276.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-672749441 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 672749392 and 672749401.

It is not an unprimeable number, because it can be changed into a prime (672749431) 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, 3696335 + ... + 3696516.

It is an arithmetic number, because the mean of its divisors is an integer number (103499928).

Almost surely, 2^672749441 is an apocalyptic number.

It is an amenable number.

672749441 is a deficient number, since it is larger than the sum of its proper divisors (155249983).

672749441 is a wasteful number, since it uses less digits than its factorization.

672749441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392871.

The product of its digits is 338688, while the sum is 44.

The square root of 672749441 is about 25937.4139227487. The cubic root of 672749441 is about 876.2293212133.

The spelling of 672749441 in words is "six hundred seventy-two million, seven hundred forty-nine thousand, four hundred forty-one".