6974249721 has 8 divisors (see below), whose sum is σ = 9314321664. Its totient is φ = 4641838800.

The previous prime is 6974249713. The next prime is 6974249747. The reversal of 6974249721 is 1279424796.

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

It is not a de Polignac number, because 6974249721 - 2³ = 6974249713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6974249791) 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, 1913130 + ... + 1916771.

It is an arithmetic number, because the mean of its divisors is an integer number (1164290208).

Almost surely, 2^6974249721 is an apocalyptic number.

It is an amenable number.

6974249721 is a deficient number, since it is larger than the sum of its proper divisors (2340071943).

6974249721 is a wasteful number, since it uses less digits than its factorization.

6974249721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830511.

The product of its digits is 1524096, while the sum is 51.

The square root of 6974249721 is about 83511.9735187715. The cubic root of 6974249721 is about 1910.5826572305.

The spelling of 6974249721 in words is "six billion, nine hundred seventy-four million, two hundred forty-nine thousand, seven hundred twenty-one".