1161607 has 4 divisors (see below), whose sum is σ = 1167040. Its totient is φ = 1156176.

The previous prime is 1161599. The next prime is 1161617. The reversal of 1161607 is 7061611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7061611 = 599 ⋅11789.

It is a cyclic number.

It is not a de Polignac number, because 1161607 - 2³ = 1161599 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (291760).

2^1161607 is an apocalyptic number.

1161607 is a deficient number, since it is larger than the sum of its proper divisors (5433).

1161607 is an equidigital number, since it uses as much as digits as its factorization.

1161607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5432.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1161607 is about 1077.7787342493. The cubic root of 1161607 is about 105.1202552666.

The spelling of 1161607 in words is "one million, one hundred sixty-one thousand, six hundred seven".