671470784 has 28 divisors (see below), whose sum is σ = 1352345784. Its totient is φ = 330722304.

The previous prime is 671470771. The next prime is 671470801. The reversal of 671470784 is 487074176.

It is a happy number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74009 + ... + 82584.

Almost surely, 2^671470784 is an apocalyptic number.

671470784 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

671470784 is an abundant number, since it is smaller than the sum of its proper divisors (680875000).

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

671470784 is a wasteful number, since it uses less digits than its factorization.

671470784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156672 (or 156662 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 671470784 is about 25912.7533079756. The cubic root of 671470784 is about 875.6738358858.

The spelling of 671470784 in words is "six hundred seventy-one million, four hundred seventy thousand, seven hundred eighty-four".