1005661235 has 8 divisors (see below), whose sum is σ = 1245722496. Its totient is φ = 778576320.

The previous prime is 1005661229. The next prime is 1005661259. The reversal of 1005661235 is 5321665001.

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

It is not a de Polignac number, because 1005661235 - 2⁶ = 1005661171 is a prime.

It is a super-2 number, since 2×1005661235² = 2022709039163450450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005661198 and 1005661207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3243914 + ... + 3244223.

It is an arithmetic number, because the mean of its divisors is an integer number (155715312).

Almost surely, 2^1005661235 is an apocalyptic number.

1005661235 is a deficient number, since it is larger than the sum of its proper divisors (240061261).

1005661235 is an equidigital number, since it uses as much as digits as its factorization.

1005661235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6488173.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1005661235 is about 31712.1622567746. The cubic root of 1005661235 is about 1001.8835284266.

The spelling of 1005661235 in words is "one billion, five million, six hundred sixty-one thousand, two hundred thirty-five".