1005673406 has 4 divisors (see below), whose sum is σ = 1508510112. Its totient is φ = 502836702.

The previous prime is 1005673237. The next prime is 1005673421. The reversal of 1005673406 is 6043765001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6043765001 = 137 ⋅44115073.

It is a super-2 number, since 2×1005673406² = 2022757999071281672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251418350 + ... + 251418353.

It is an arithmetic number, because the mean of its divisors is an integer number (377127528).

Almost surely, 2^1005673406 is an apocalyptic number.

1005673406 is a deficient number, since it is larger than the sum of its proper divisors (502836706).

1005673406 is an equidigital number, since it uses as much as digits as its factorization.

1005673406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502836705.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 1005673406 is about 31712.3541541778. The cubic root of 1005673406 is about 1001.8875701704.

The spelling of 1005673406 in words is "one billion, five million, six hundred seventy-three thousand, four hundred six".