672187144 has 16 divisors (see below), whose sum is σ = 1315149120. Its totient is φ = 321480720.

The previous prime is 672187141. The next prime is 672187147. The reversal of 672187144 is 441781276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (672187141) and next prime (672187147).

It is a junction number, because it is equal to n+sod(n) for n = 672187097 and 672187106.

It is not an unprimeable number, because it can be changed into a prime (672187141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826412 + ... + 1826779.

It is an arithmetic number, because the mean of its divisors is an integer number (82196820).

Almost surely, 2^672187144 is an apocalyptic number.

It is an amenable number.

672187144 is a deficient number, since it is larger than the sum of its proper divisors (642961976).

672187144 is a wasteful number, since it uses less digits than its factorization.

672187144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653220 (or 3653216 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 672187144 is about 25926.5721606232. The cubic root of 672187144 is about 875.9851300270.

The spelling of 672187144 in words is "six hundred seventy-two million, one hundred eighty-seven thousand, one hundred forty-four".