1117643 has 6 divisors (see below), whose sum is σ = 1155852. Its totient is φ = 1080660.

The previous prime is 1117609. The next prime is 1117657. The reversal of 1117643 is 3467111.

It is not a de Polignac number, because 1117643 - 2⁶ = 1117579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1117603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380 + ... + 1542.

It is an arithmetic number, because the mean of its divisors is an integer number (192642).

2^1117643 is an apocalyptic number.

1117643 is a deficient number, since it is larger than the sum of its proper divisors (38209).

1117643 is an equidigital number, since it uses as much as digits as its factorization.

1117643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225 (or 1194 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 1117643 is about 1057.1863601088. The cubic root of 1117643 is about 103.7769814182.

The spelling of 1117643 in words is "one million, one hundred seventeen thousand, six hundred forty-three".