6993861 has 8 divisors (see below), whose sum is σ = 10657344. Its totient is φ = 3996480.

The previous prime is 6993853. The next prime is 6993869. The reversal of 6993861 is 1683996.

It is an interprime number because it is at equal distance from previous prime (6993853) and next prime (6993869).

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

It is not a de Polignac number, because 6993861 - 2³ = 6993853 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6993869) 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, 166500 + ... + 166541.

It is an arithmetic number, because the mean of its divisors is an integer number (1332168).

Almost surely, 2^6993861 is an apocalyptic number.

It is an amenable number.

6993861 is a deficient number, since it is larger than the sum of its proper divisors (3663483).

6993861 is a wasteful number, since it uses less digits than its factorization.

6993861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333051.

The product of its digits is 69984, while the sum is 42.

The square root of 6993861 is about 2644.5908946376. The cubic root of 6993861 is about 191.2371805667.

It can be divided in two parts, 699 and 3861, that added together give a triangular number (4560 = T₉₅).

The spelling of 6993861 in words is "six million, nine hundred ninety-three thousand, eight hundred sixty-one".