6989961 has 8 divisors (see below), whose sum is σ = 10167264. Its totient is φ = 4236320.

The previous prime is 6989959. The next prime is 6989963. The reversal of 6989961 is 1699896.

It is an interprime number because it is at equal distance from previous prime (6989959) and next prime (6989963).

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

It is not a de Polignac number, because 6989961 - 2¹ = 6989959 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6989961.

It is not an unprimeable number, because it can be changed into a prime (6989963) 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, 105876 + ... + 105941.

It is an arithmetic number, because the mean of its divisors is an integer number (1270908).

Almost surely, 2^6989961 is an apocalyptic number.

It is an amenable number.

6989961 is a deficient number, since it is larger than the sum of its proper divisors (3177303).

6989961 is a wasteful number, since it uses less digits than its factorization.

6989961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211831.

The product of its digits is 209952, while the sum is 48.

The square root of 6989961 is about 2643.8534376928. The cubic root of 6989961 is about 191.2016273065.

The spelling of 6989961 in words is "six million, nine hundred eighty-nine thousand, nine hundred sixty-one".