11624981 has 2 divisors, whose sum is σ = 11624982. Its totient is φ = 11624980.

The previous prime is 11624971. The next prime is 11625001. The reversal of 11624981 is 18942611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 5597956 = 2455^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 11624981 - 2⁶ = 11624917 is a prime.

It is a super-2 number, since 2×11624981² = 270280366500722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11624971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5812490 + 5812491.

It is an arithmetic number, because the mean of its divisors is an integer number (5812491).

Almost surely, 2^11624981 is an apocalyptic number.

It is an amenable number.

11624981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11624981 is an equidigital number, since it uses as much as digits as its factorization.

11624981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 11624981 is about 3409.5426379501. The cubic root of 11624981 is about 226.5326213884.

The spelling of 11624981 in words is "eleven million, six hundred twenty-four thousand, nine hundred eighty-one".