672686349 has 8 divisors (see below), whose sum is σ = 927843360. Its totient is φ = 432993456.

The previous prime is 672686341. The next prime is 672686351. The reversal of 672686349 is 943686276.

It is a happy number.

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

It is not a de Polignac number, because 672686349 - 2³ = 672686341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672686341) 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, 3865927 + ... + 3866100.

It is an arithmetic number, because the mean of its divisors is an integer number (115980420).

Almost surely, 2^672686349 is an apocalyptic number.

It is an amenable number.

672686349 is a deficient number, since it is larger than the sum of its proper divisors (255157011).

672686349 is a wasteful number, since it uses less digits than its factorization.

672686349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732059.

The product of its digits is 2612736, while the sum is 51.

The square root of 672686349 is about 25936.1976588705. The cubic root of 672686349 is about 876.2019287522.

The spelling of 672686349 in words is "six hundred seventy-two million, six hundred eighty-six thousand, three hundred forty-nine".