1860406 has 8 divisors (see below), whose sum is σ = 2843424. Its totient is φ = 912600.

The previous prime is 1860377. The next prime is 1860407. The reversal of 1860406 is 6040681.

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

It is a super-2 number, since 2×1860406² = 6922220969672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860407) 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, 8670 + ... + 8881.

It is an arithmetic number, because the mean of its divisors is an integer number (355428).

2^1860406 is an apocalyptic number.

1860406 is a deficient number, since it is larger than the sum of its proper divisors (983018).

1860406 is a wasteful number, since it uses less digits than its factorization.

1860406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17606.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1860406 is about 1363.9670083987. The cubic root of 1860406 is about 122.9898420677.

The spelling of 1860406 in words is "one million, eight hundred sixty thousand, four hundred six".