6967649 has 4 divisors (see below), whose sum is σ = 7503636. Its totient is φ = 6431664.

The previous prime is 6967633. The next prime is 6967657. The reversal of 6967649 is 9467696.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3489424 + 3478225 = 1868^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 6967649 - 2⁴ = 6967633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6967619) 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, 267974 + ... + 267999.

It is an arithmetic number, because the mean of its divisors is an integer number (1875909).

Almost surely, 2^6967649 is an apocalyptic number.

It is an amenable number.

6967649 is a deficient number, since it is larger than the sum of its proper divisors (535987).

6967649 is a wasteful number, since it uses less digits than its factorization.

6967649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535986.

The product of its digits is 489888, while the sum is 47.

The square root of 6967649 is about 2639.6304665616. The cubic root of 6967649 is about 190.9979715253.

Adding to 6967649 its sum of digits (47), we get a palindrome (6967696).

The spelling of 6967649 in words is "six million, nine hundred sixty-seven thousand, six hundred forty-nine".