6921203397 has 16 divisors (see below), whose sum is σ = 9764843520. Its totient is φ = 4348393200.

The previous prime is 6921203389. The next prime is 6921203413. The reversal of 6921203397 is 7933021296.

It is not a de Polignac number, because 6921203397 - 2³ = 6921203389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921203297) 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, 306979 + ... + 328752.

It is an arithmetic number, because the mean of its divisors is an integer number (610302720).

Almost surely, 2^6921203397 is an apocalyptic number.

It is an amenable number.

6921203397 is a deficient number, since it is larger than the sum of its proper divisors (2843640123).

6921203397 is a wasteful number, since it uses less digits than its factorization.

6921203397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635944.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 6921203397 is about 83193.7701814264. The cubic root of 6921203397 is about 1905.7263435336.

The spelling of 6921203397 in words is "six billion, nine hundred twenty-one million, two hundred three thousand, three hundred ninety-seven".