6470643380 has 18 divisors (see below), whose sum is σ = 13589106594. Its totient is φ = 2588113456.

The previous prime is 6470643371. The next prime is 6470643407. The reversal of 6470643380 is 833460746.

It can be written as a sum of positive squares in only one way, i.e., 5176514704 + 1294128676 = 71948^2 + 35974^2 .

It is a super-2 number, since 2×6470643380² = 83738451502275648800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350747 + ... + 368733.

Almost surely, 2^6470643380 is an apocalyptic number.

It is an amenable number.

6470643380 is an abundant number, since it is smaller than the sum of its proper divisors (7118463214).

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

6470643380 is an frugal number, since it uses more digits than its factorization.

6470643380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35983 (or 17994 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 6470643380 is about 80440.3094225774. The cubic root of 6470643380 is about 1863.4417505416.

The spelling of 6470643380 in words is "six billion, four hundred seventy million, six hundred forty-three thousand, three hundred eighty".