11771623 has 2 divisors, whose sum is σ = 11771624. Its totient is φ = 11771622.

The previous prime is 11771611. The next prime is 11771657. The reversal of 11771623 is 32617711.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11771623 is a prime.

It is a super-2 number, since 2×11771623² = 277142216108258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11771591 and 11771600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11771603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5885811 + 5885812.

It is an arithmetic number, because the mean of its divisors is an integer number (5885812).

Almost surely, 2^11771623 is an apocalyptic number.

11771623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11771623 is an equidigital number, since it uses as much as digits as its factorization.

11771623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 28.

The square root of 11771623 is about 3430.9798891862. The cubic root of 11771623 is about 227.4811673820.

The spelling of 11771623 in words is "eleven million, seven hundred seventy-one thousand, six hundred twenty-three".