1655406 has 12 divisors (see below), whose sum is σ = 3586752. Its totient is φ = 551796.

The previous prime is 1655393. The next prime is 1655419. The reversal of 1655406 is 6045561.

It is a happy number.

1655406 is a `hidden beast` number, since 1 + 655 + 4 + 0 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1655393) and next prime (1655419).

It is a self number, because there is not a number n which added to its sum of digits gives 1655406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45966 + ... + 46001.

It is an arithmetic number, because the mean of its divisors is an integer number (298896).

2^1655406 is an apocalyptic number.

1655406 is an abundant number, since it is smaller than the sum of its proper divisors (1931346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1655406 is a wasteful number, since it uses less digits than its factorization.

1655406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91975 (or 91972 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1655406 is about 1286.6258197316. The cubic root of 1655406 is about 118.2954865852.

The spelling of 1655406 in words is "one million, six hundred fifty-five thousand, four hundred six".