6785424621 has 8 divisors (see below), whose sum is σ = 10052480960. Its totient is φ = 4523616396.

The previous prime is 6785424619. The next prime is 6785424641. The reversal of 6785424621 is 1264245876.

6785424621 is a `hidden beast` number, since 67 + 8 + 542 + 46 + 2 + 1 = 666.

It is not a de Polignac number, because 6785424621 - 2¹ = 6785424619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6785424641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125655985 + ... + 125656038.

It is an arithmetic number, because the mean of its divisors is an integer number (1256560120).

Almost surely, 2^6785424621 is an apocalyptic number.

It is an amenable number.

6785424621 is a deficient number, since it is larger than the sum of its proper divisors (3267056339).

6785424621 is a wasteful number, since it uses less digits than its factorization.

6785424621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251312032 (or 251312026 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 6785424621 is about 82373.6888878967. The cubic root of 6785424621 is about 1893.1818988812.

The spelling of 6785424621 in words is "six billion, seven hundred eighty-five million, four hundred twenty-four thousand, six hundred twenty-one".