6910721397 has 12 divisors (see below), whose sum is σ = 10008221184. Its totient is φ = 4595116200.

The previous prime is 6910721371. The next prime is 6910721423. The reversal of 6910721397 is 7931270196.

6910721397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (6910721371) and next prime (6910721423).

It is not a de Polignac number, because 6910721397 - 2¹⁴ = 6910705013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6910721327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 998979 + ... + 1005872.

It is an arithmetic number, because the mean of its divisors is an integer number (834018432).

Almost surely, 2^6910721397 is an apocalyptic number.

It is an amenable number.

6910721397 is a deficient number, since it is larger than the sum of its proper divisors (3097499787).

6910721397 is a wasteful number, since it uses less digits than its factorization.

6910721397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005240 (or 2005237 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 6910721397 is about 83130.7488057217. The cubic root of 6910721397 is about 1904.7637981888.

The spelling of 6910721397 in words is "six billion, nine hundred ten million, seven hundred twenty-one thousand, three hundred ninety-seven".