1201659 has 8 divisors (see below), whose sum is σ = 1611792. Its totient is φ = 796320.

The previous prime is 1201643. The next prime is 1201687. The reversal of 1201659 is 9561021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201659 - 2⁴ = 1201643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 564 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (201474).

2^1201659 is an apocalyptic number.

1201659 is a deficient number, since it is larger than the sum of its proper divisors (410133).

1201659 is a wasteful number, since it uses less digits than its factorization.

1201659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1201659 is about 1096.2020799105. The cubic root of 1201659 is about 106.3148052172.

The spelling of 1201659 in words is "one million, two hundred one thousand, six hundred fifty-nine".