672095639 has 8 divisors (see below), whose sum is σ = 691167408. Its totient is φ = 653071680.

The previous prime is 672095623. The next prime is 672095647. The reversal of 672095639 is 936590276.

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 672095639 - 2⁴ = 672095623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 672095593 and 672095602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672095689) 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, 17579 + ... + 40659.

It is an arithmetic number, because the mean of its divisors is an integer number (86395926).

Almost surely, 2^672095639 is an apocalyptic number.

672095639 is a deficient number, since it is larger than the sum of its proper divisors (19071769).

672095639 is a wasteful number, since it uses less digits than its factorization.

672095639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23905.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 672095639 is about 25924.8074052634. The cubic root of 672095639 is about 875.9453788667.

The spelling of 672095639 in words is "six hundred seventy-two million, ninety-five thousand, six hundred thirty-nine".