6961513 has 16 divisors (see below), whose sum is σ = 7909776. Its totient is φ = 6082560.

The previous prime is 6961511. The next prime is 6961519. The reversal of 6961513 is 3151696.

It can be written as a sum of positive squares in 8 ways, for example, as 595984 + 6365529 = 772^2 + 2523^2 .

It is a cyclic number.

It is not a de Polignac number, because 6961513 - 2¹ = 6961511 is a prime.

It is a Duffinian number.

6961513 is a lucky number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19545 + ... + 19897.

It is an arithmetic number, because the mean of its divisors is an integer number (494361).

Almost surely, 2^6961513 is an apocalyptic number.

It is an amenable number.

6961513 is a deficient number, since it is larger than the sum of its proper divisors (948263).

6961513 is a wasteful number, since it uses less digits than its factorization.

6961513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444.

The product of its digits is 4860, while the sum is 31.

The square root of 6961513 is about 2638.4679266574. The cubic root of 6961513 is about 190.9418881535.

It can be divided in two parts, 696 and 1513, that added together give a square (2209 = 47²).

The spelling of 6961513 in words is "six million, nine hundred sixty-one thousand, five hundred thirteen".