6743619921 has 8 divisors (see below), whose sum is σ = 9001093024. Its totient is φ = 4490946720.

The previous prime is 6743619917. The next prime is 6743619923. The reversal of 6743619921 is 1299163476.

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

It is not a de Polignac number, because 6743619921 - 2² = 6743619917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6743619923) 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, 1196695 + ... + 1202316.

It is an arithmetic number, because the mean of its divisors is an integer number (1125136628).

Almost surely, 2^6743619921 is an apocalyptic number.

It is an amenable number.

6743619921 is a deficient number, since it is larger than the sum of its proper divisors (2257473103).

6743619921 is a wasteful number, since it uses less digits than its factorization.

6743619921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399951.

The product of its digits is 489888, while the sum is 48.

The square root of 6743619921 is about 82119.5465221283. The cubic root of 6743619921 is about 1889.2859504138.

The spelling of 6743619921 in words is "six billion, seven hundred forty-three million, six hundred nineteen thousand, nine hundred twenty-one".