6407028868 has 24 divisors (see below), whose sum is σ = 11377515800. Its totient is φ = 3156599808.

The previous prime is 6407028821. The next prime is 6407028889. The reversal of 6407028868 is 8688207046.

It can be written as a sum of positive squares in 4 ways, for example, as 2522249284 + 3884779584 = 50222^2 + 62328^2 .

It is a super-2 number, since 2×6407028868² = 82100037830770722848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52798 + ... + 124906.

Almost surely, 2^6407028868 is an apocalyptic number.

It is an amenable number.

6407028868 is a deficient number, since it is larger than the sum of its proper divisors (4970486932).

6407028868 is a wasteful number, since it uses less digits than its factorization.

6407028868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72439 (or 72437 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 6407028868 is about 80043.9183698549. The cubic root of 6407028868 is about 1857.3149746717.

The spelling of 6407028868 in words is "six billion, four hundred seven million, twenty-eight thousand, eight hundred sixty-eight".