6997067890 has 8 divisors (see below), whose sum is σ = 12594722220. Its totient is φ = 2798827152.

The previous prime is 6997067881. The next prime is 6997067899. The reversal of 6997067890 is 987607996.

It is an interprime number because it is at equal distance from previous prime (6997067881) and next prime (6997067899).

It can be written as a sum of positive squares in 2 ways, for example, as 5735184361 + 1261883529 = 75731^2 + 35523^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6997067899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349853385 + ... + 349853404.

Almost surely, 2^6997067890 is an apocalyptic number.

6997067890 is a deficient number, since it is larger than the sum of its proper divisors (5597654330).

6997067890 is a wasteful number, since it uses less digits than its factorization.

6997067890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699706796.

The product of its (nonzero) digits is 10287648, while the sum is 61.

The square root of 6997067890 is about 83648.4781092878. The cubic root of 6997067890 is about 1912.6640538212.

The spelling of 6997067890 in words is "six billion, nine hundred ninety-seven million, sixty-seven thousand, eight hundred ninety".