1240006655 has 8 divisors (see below), whose sum is σ = 1488894000. Its totient is φ = 991414656.

The previous prime is 1240006627. The next prime is 1240006759. The reversal of 1240006655 is 5566000421.

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

It is a cyclic number.

It is not a de Polignac number, because 1240006655 - 2¹⁶ = 1239941119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64490 + ... + 81479.

It is an arithmetic number, because the mean of its divisors is an integer number (186111750).

Almost surely, 2^1240006655 is an apocalyptic number.

1240006655 is a deficient number, since it is larger than the sum of its proper divisors (248887345).

1240006655 is a wasteful number, since it uses less digits than its factorization.

1240006655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147673.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1240006655 is about 35213.7282178414. The cubic root of 1240006655 is about 1074.3389929514.

The spelling of 1240006655 in words is "one billion, two hundred forty million, six thousand, six hundred fifty-five".