6961663 has 4 divisors (see below), whose sum is σ = 7264368. Its totient is φ = 6658960.

The previous prime is 6961649. The next prime is 6961673. The reversal of 6961663 is 3661696.

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

It is not a de Polignac number, because 6961663 - 2⁹ = 6961151 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 (6961613) 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, 151318 + ... + 151363.

It is an arithmetic number, because the mean of its divisors is an integer number (1816092).

Almost surely, 2^6961663 is an apocalyptic number.

6961663 is a deficient number, since it is larger than the sum of its proper divisors (302705).

6961663 is a wasteful number, since it uses less digits than its factorization.

6961663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302704.

The product of its digits is 34992, while the sum is 37.

The square root of 6961663 is about 2638.4963520915. The cubic root of 6961663 is about 190.9432595545.

The spelling of 6961663 in words is "six million, nine hundred sixty-one thousand, six hundred sixty-three".