672258678 has 96 divisors (see below), whose sum is σ = 1696225536. Its totient is φ = 173856384.

The previous prime is 672258677. The next prime is 672258787. The reversal of 672258678 is 876852276.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 672258678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672258677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375301 + ... + 377087.

It is an arithmetic number, because the mean of its divisors is an integer number (17669016).

Almost surely, 2^672258678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672258678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848112768).

672258678 is an abundant number, since it is smaller than the sum of its proper divisors (1023966858).

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

672258678 is a wasteful number, since it uses less digits than its factorization.

672258678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1865 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 672258678 is about 25927.9516738211. The cubic root of 672258678 is about 876.0162029696.

The spelling of 672258678 in words is "six hundred seventy-two million, two hundred fifty-eight thousand, six hundred seventy-eight".