6420769494 has 32 divisors (see below), whose sum is σ = 13187754720. Its totient is φ = 2082816000.

The previous prime is 6420769469. The next prime is 6420769513. The reversal of 6420769494 is 4949670246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66102 + ... + 131190.

It is an arithmetic number, because the mean of its divisors is an integer number (412117335).

Almost surely, 2^6420769494 is an apocalyptic number.

6420769494 is an abundant number, since it is smaller than the sum of its proper divisors (6766985226).

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

6420769494 is a wasteful number, since it uses less digits than its factorization.

6420769494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65536.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 6420769494 is about 80129.7041926401. The cubic root of 6420769494 is about 1858.6417700105.

The spelling of 6420769494 in words is "six billion, four hundred twenty million, seven hundred sixty-nine thousand, four hundred ninety-four".