6987213406 has 8 divisors (see below), whose sum is σ = 11032442280. Its totient is φ = 3309732648.

The previous prime is 6987213383. The next prime is 6987213407. The reversal of 6987213406 is 6043127896.

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

It is a super-2 number, since 2×6987213406² = 97642302361972241672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6987213407) 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, 91936981 + ... + 91937056.

It is an arithmetic number, because the mean of its divisors is an integer number (1379055285).

Almost surely, 2^6987213406 is an apocalyptic number.

6987213406 is a deficient number, since it is larger than the sum of its proper divisors (4045228874).

6987213406 is a wasteful number, since it uses less digits than its factorization.

6987213406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183874058.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 6987213406 is about 83589.5532109127. The cubic root of 6987213406 is about 1911.7657169258.

The spelling of 6987213406 in words is "six billion, nine hundred eighty-seven million, two hundred thirteen thousand, four hundred six".