671764562 has 16 divisors (see below), whose sum is σ = 1152271872. Its totient is φ = 287730240.

The previous prime is 671764553. The next prime is 671764591. The reversal of 671764562 is 265467176.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12362 + ... + 38682.

It is an arithmetic number, because the mean of its divisors is an integer number (72016992).

Almost surely, 2^671764562 is an apocalyptic number.

671764562 is a deficient number, since it is larger than the sum of its proper divisors (480507310).

671764562 is a wasteful number, since it uses less digits than its factorization.

671764562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28153.

The product of its digits is 423360, while the sum is 44.

The square root of 671764562 is about 25918.4212867991. The cubic root of 671764562 is about 875.8015238438.

The spelling of 671764562 in words is "six hundred seventy-one million, seven hundred sixty-four thousand, five hundred sixty-two".