6837248721 has 8 divisors (see below), whose sum is σ = 9117298080. Its totient is φ = 4557682592.

The previous prime is 6837248707. The next prime is 6837248731. The reversal of 6837248721 is 1278427386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6837248721 - 2⁶ = 6837248657 is a prime.

It is a super-2 number, since 2×6837248721² = 93495940145632271682, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6837248731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86391 + ... + 145388.

It is an arithmetic number, because the mean of its divisors is an integer number (1139662260).

Almost surely, 2^6837248721 is an apocalyptic number.

It is an amenable number.

6837248721 is a deficient number, since it is larger than the sum of its proper divisors (2280049359).

6837248721 is a wasteful number, since it uses less digits than its factorization.

6837248721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241615.

The product of its digits is 903168, while the sum is 48.

The square root of 6837248721 is about 82687.6576098271. The cubic root of 6837248721 is about 1897.9894448601.

The spelling of 6837248721 in words is "six billion, eight hundred thirty-seven million, two hundred forty-eight thousand, seven hundred twenty-one".