6961551 has 8 divisors (see below), whose sum is σ = 9828144. Its totient is φ = 4368000.

The previous prime is 6961547. The next prime is 6961573. The reversal of 6961551 is 1551696.

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

It is not a de Polignac number, because 6961551 - 2² = 6961547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6961511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68200 + ... + 68301.

It is an arithmetic number, because the mean of its divisors is an integer number (1228518).

Almost surely, 2^6961551 is an apocalyptic number.

6961551 is a deficient number, since it is larger than the sum of its proper divisors (2866593).

6961551 is a wasteful number, since it uses less digits than its factorization.

6961551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136521.

The product of its digits is 8100, while the sum is 33.

The square root of 6961551 is about 2638.4751277964. The cubic root of 6961551 is about 190.9422355769.

The spelling of 6961551 in words is "six million, nine hundred sixty-one thousand, five hundred fifty-one".