1040655 has 64 divisors (see below), whose sum is σ = 2239488. Its totient is φ = 399360.

The previous prime is 1040651. The next prime is 1040657. The reversal of 1040655 is 5560401.

It is a happy number.

It is not a de Polignac number, because 1040655 - 2² = 1040651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040651) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19609 + ... + 19661.

It is an arithmetic number, because the mean of its divisors is an integer number (34992).

2^1040655 is an apocalyptic number.

1040655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1040655 is an abundant number, since it is smaller than the sum of its proper divisors (1198833).

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

1040655 is a wasteful number, since it uses less digits than its factorization.

1040655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1040655 is about 1020.1249923416. The cubic root of 1040655 is about 101.3372057711.

The spelling of 1040655 in words is "one million, forty thousand, six hundred fifty-five".