6460220642 has 4 divisors (see below), whose sum is σ = 9690330966. Its totient is φ = 3230110320.

The previous prime is 6460220563. The next prime is 6460220651. The reversal of 6460220642 is 2460220646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5008534441 + 1451686201 = 70771^2 + 38101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6460220599 and 6460220608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615055159 + ... + 1615055162.

Almost surely, 2^6460220642 is an apocalyptic number.

6460220642 is a deficient number, since it is larger than the sum of its proper divisors (3230110324).

6460220642 is a wasteful number, since it uses less digits than its factorization.

6460220642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3230110323.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 6460220642 is about 80375.4977713980. The cubic root of 6460220642 is about 1862.4406855996.

The spelling of 6460220642 in words is "six billion, four hundred sixty million, two hundred twenty thousand, six hundred forty-two".