911642 has 8 divisors (see below), whose sum is σ = 1447956. Its totient is φ = 428992.

The previous prime is 911633. The next prime is 911657. The reversal of 911642 is 246119.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 844561 + 67081 = 919^2 + 259^2 .

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

It is a super-2 number, since 2×911642² = 1662182272328, which contains 22 as substring.

It is an unprimeable number.

911642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 13373 + ... + 13440.

2⁹¹¹⁶⁴² is an apocalyptic number.

911642 is a deficient number, since it is larger than the sum of its proper divisors (536314).

911642 is a wasteful number, since it uses less digits than its factorization.

911642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26832.

The product of its digits is 432, while the sum is 23.

The square root of 911642 is about 954.7994553832. The cubic root of 911642 is about 96.9634609251.

The spelling of 911642 in words is "nine hundred eleven thousand, six hundred forty-two".