1006605451 has 4 divisors (see below), whose sum is σ = 1006733992. Its totient is φ = 1006476912.

The previous prime is 1006605449. The next prime is 1006605493. The reversal of 1006605451 is 1545066001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1006605451 - 2¹ = 1006605449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006605401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51705 + ... + 68458.

It is an arithmetic number, because the mean of its divisors is an integer number (251683498).

Almost surely, 2^1006605451 is an apocalyptic number.

1006605451 is a deficient number, since it is larger than the sum of its proper divisors (128541).

1006605451 is an equidigital number, since it uses as much as digits as its factorization.

1006605451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128540.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1006605451 is about 31727.0460490730. The cubic root of 1006605451 is about 1002.1969867146.

The spelling of 1006605451 in words is "one billion, six million, six hundred five thousand, four hundred fifty-one".