6254643997 has 16 divisors (see below), whose sum is σ = 7225833472. Its totient is φ = 5302992240.

The previous prime is 6254643973. The next prime is 6254644009. The reversal of 6254643997 is 7993464526.

It is not a de Polignac number, because 6254643997 - 2²⁷ = 6120426269 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 (6254643097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692722 + ... + 701692.

It is an arithmetic number, because the mean of its divisors is an integer number (451614592).

Almost surely, 2^6254643997 is an apocalyptic number.

It is an amenable number.

6254643997 is a deficient number, since it is larger than the sum of its proper divisors (971189475).

6254643997 is a wasteful number, since it uses less digits than its factorization.

6254643997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048.

The product of its digits is 9797760, while the sum is 55.

The square root of 6254643997 is about 79086.3072661760. The cubic root of 6254643997 is about 1842.4718665339.

The spelling of 6254643997 in words is "six billion, two hundred fifty-four million, six hundred forty-three thousand, nine hundred ninety-seven".