1356606440 has 32 divisors (see below), whose sum is σ = 3488417280. Its totient is φ = 465122112.

The previous prime is 1356606421. The next prime is 1356606463. The reversal of 1356606440 is 446066531.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1356606440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2422232 + ... + 2422791.

It is an arithmetic number, because the mean of its divisors is an integer number (109013040).

Almost surely, 2^1356606440 is an apocalyptic number.

1356606440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1356606440 is an abundant number, since it is smaller than the sum of its proper divisors (2131810840).

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

1356606440 is a wasteful number, since it uses less digits than its factorization.

1356606440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845041 (or 4845037 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1356606440 is about 36832.1386834922. The cubic root of 1356606440 is about 1107.0093562194.

The spelling of 1356606440 in words is "one billion, three hundred fifty-six million, six hundred six thousand, four hundred forty".