11697421 has 8 divisors (see below), whose sum is σ = 12001464. Its totient is φ = 11397120.

The previous prime is 11697403. The next prime is 11697431. The reversal of 11697421 is 12479611.

It can be written as a sum of positive squares in 4 ways, for example, as 42025 + 11655396 = 205^2 + 3414^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11697421 - 2¹⁹ = 11173133 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 (11697431) 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, 6045 + ... + 7741.

It is an arithmetic number, because the mean of its divisors is an integer number (1500183).

Almost surely, 2^11697421 is an apocalyptic number.

It is an amenable number.

11697421 is a deficient number, since it is larger than the sum of its proper divisors (304043).

11697421 is a wasteful number, since it uses less digits than its factorization.

11697421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871.

The product of its digits is 3024, while the sum is 31.

The square root of 11697421 is about 3420.1492657485. The cubic root of 11697421 is about 227.0021864500.

The spelling of 11697421 in words is "eleven million, six hundred ninety-seven thousand, four hundred twenty-one".