1163651 has 2 divisors, whose sum is σ = 1163652. Its totient is φ = 1163650.

The previous prime is 1163641. The next prime is 1163653. The reversal of 1163651 is 1563611.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1163651 - 2⁶ = 1163587 is a prime.

Together with 1163653, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1163653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581825 + 581826.

It is an arithmetic number, because the mean of its divisors is an integer number (581826).

2^1163651 is an apocalyptic number.

1163651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163651 is an equidigital number, since it uses as much as digits as its factorization.

1163651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 23.

The square root of 1163651 is about 1078.7265640560. The cubic root of 1163651 is about 105.1818767664.

The spelling of 1163651 in words is "one million, one hundred sixty-three thousand, six hundred fifty-one".