672305647 has 8 divisors (see below), whose sum is σ = 766611216. Its totient is φ = 584084352.

The previous prime is 672305639. The next prime is 672305653. The reversal of 672305647 is 746503276.

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 672305647 - 2³ = 672305639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672305047) 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, 1520833 + ... + 1521274.

It is an arithmetic number, because the mean of its divisors is an integer number (95826402).

Almost surely, 2^672305647 is an apocalyptic number.

672305647 is a deficient number, since it is larger than the sum of its proper divisors (94305569).

672305647 is a wasteful number, since it uses less digits than its factorization.

672305647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042137.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 672305647 is about 25928.8574179427. The cubic root of 672305647 is about 876.0366041674.

The spelling of 672305647 in words is "six hundred seventy-two million, three hundred five thousand, six hundred forty-seven".