6690246420 has 96 divisors (see below), whose sum is σ = 22007664000. Its totient is φ = 1497116160.

The previous prime is 6690246361. The next prime is 6690246449. The reversal of 6690246420 is 246420966.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381295 + ... + 398454.

It is an arithmetic number, because the mean of its divisors is an integer number (229246500).

Almost surely, 2^6690246420 is an apocalyptic number.

6690246420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6690246420 is an abundant number, since it is smaller than the sum of its proper divisors (15317417580).

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

6690246420 is a wasteful number, since it uses less digits than its factorization.

6690246420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779785 (or 779783 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 6690246420 is about 81793.9265471465. The cubic root of 6690246420 is about 1884.2883865318.

The spelling of 6690246420 in words is "six billion, six hundred ninety million, two hundred forty-six thousand, four hundred twenty".