6970991 has 4 divisors (see below), whose sum is σ = 7211400. Its totient is φ = 6730584.

The previous prime is 6970981. The next prime is 6971009. The reversal of 6970991 is 1990796.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6970991 - 2²² = 2776687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6970961) 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, 120161 + ... + 120218.

It is an arithmetic number, because the mean of its divisors is an integer number (1802850).

Almost surely, 2^6970991 is an apocalyptic number.

6970991 is a deficient number, since it is larger than the sum of its proper divisors (240409).

6970991 is a wasteful number, since it uses less digits than its factorization.

6970991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240408.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 6970991 is about 2640.2634338263. The cubic root of 6970991 is about 191.0285037365.

The spelling of 6970991 in words is "six million, nine hundred seventy thousand, nine hundred ninety-one".