6420707458 has 48 divisors (see below), whose sum is σ = 11512142712. Its totient is φ = 2672524800.

The previous prime is 6420707453. The next prime is 6420707473. The reversal of 6420707458 is 8547070246.

It can be written as a sum of positive squares in 4 ways, for example, as 5822758249 + 597949209 = 76307^2 + 24453^2 .

It is a super-2 number, since 2×6420707458² = 82450968522433643528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6420707453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131128 + ... + 173308.

Almost surely, 2^6420707458 is an apocalyptic number.

6420707458 is a deficient number, since it is larger than the sum of its proper divisors (5091435254).

6420707458 is a wasteful number, since it uses less digits than its factorization.

6420707458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42259 (or 42248 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 43.

The square root of 6420707458 is about 80129.3170943070. The cubic root of 6420707458 is about 1858.6357840679.

The spelling of 6420707458 in words is "six billion, four hundred twenty million, seven hundred seven thousand, four hundred fifty-eight".