672239670 has 64 divisors (see below), whose sum is σ = 1716650496. Its totient is φ = 167892480.

The previous prime is 672239663. The next prime is 672239671. The reversal of 672239670 is 76932276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672239671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104487 + ... + 110733.

It is an arithmetic number, because the mean of its divisors is an integer number (26822664).

Almost surely, 2^672239670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672239670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858325248).

672239670 is an abundant number, since it is smaller than the sum of its proper divisors (1044410826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672239670 is a wasteful number, since it uses less digits than its factorization.

672239670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 190512, while the sum is 42.

The square root of 672239670 is about 25927.5851170139. The cubic root of 672239670 is about 876.0079464887.

The spelling of 672239670 in words is "six hundred seventy-two million, two hundred thirty-nine thousand, six hundred seventy".