672545808 has 80 divisors (see below), whose sum is σ = 2105966400. Its totient is φ = 203800320.

The previous prime is 672545791. The next prime is 672545827. The reversal of 672545808 is 808545276.

672545808 is a `hidden beast` number, since 67 + 2 + 5 + 4 + 580 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66013 + ... + 75516.

It is an arithmetic number, because the mean of its divisors is an integer number (26324580).

Almost surely, 2^672545808 is an apocalyptic number.

It is an amenable number.

672545808 is an abundant number, since it is smaller than the sum of its proper divisors (1433420592).

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

672545808 is a wasteful number, since it uses less digits than its factorization.

672545808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141557 (or 141545 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 672545808 is about 25933.4881572071. The cubic root of 672545808 is about 876.1409043376.

The spelling of 672545808 in words is "six hundred seventy-two million, five hundred forty-five thousand, eight hundred eight".