1165406 has 8 divisors (see below), whose sum is σ = 1907064. Its totient is φ = 529720.

The previous prime is 1165399. The next prime is 1165421. The reversal of 1165406 is 6045611.

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

It is a super-2 number, since 2×1165406² = 2716342289672, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26465 + ... + 26508.

It is an arithmetic number, because the mean of its divisors is an integer number (238383).

2^1165406 is an apocalyptic number.

1165406 is a deficient number, since it is larger than the sum of its proper divisors (741658).

1165406 is a wasteful number, since it uses less digits than its factorization.

1165406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52986.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1165406 is about 1079.5397167312. The cubic root of 1165406 is about 105.2347280854.

The spelling of 1165406 in words is "one million, one hundred sixty-five thousand, four hundred six".