6961615 has 4 divisors (see below), whose sum is σ = 8353944. Its totient is φ = 5569288.

The previous prime is 6961613. The next prime is 6961649. The reversal of 6961615 is 5161696.

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 6961615 - 2¹ = 6961613 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, 696157 + ... + 696166.

It is an arithmetic number, because the mean of its divisors is an integer number (2088486).

Almost surely, 2^6961615 is an apocalyptic number.

6961615 is a deficient number, since it is larger than the sum of its proper divisors (1392329).

6961615 is a wasteful number, since it uses less digits than its factorization.

6961615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392328.

The product of its digits is 9720, while the sum is 34.

The square root of 6961615 is about 2638.4872559859. The cubic root of 6961615 is about 190.9428207083.

The spelling of 6961615 in words is "six million, nine hundred sixty-one thousand, six hundred fifteen".