1005996523 has 4 divisors (see below), whose sum is σ = 1149710320. Its totient is φ = 862282728.

The previous prime is 1005996503. The next prime is 1005996527. The reversal of 1005996523 is 3256995001.

It is a happy number.

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 1005996523 - 2²⁹ = 469125611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005996527) 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, 71856888 + ... + 71856901.

It is an arithmetic number, because the mean of its divisors is an integer number (287427580).

Almost surely, 2^1005996523 is an apocalyptic number.

1005996523 is a deficient number, since it is larger than the sum of its proper divisors (143713797).

1005996523 is an equidigital number, since it uses as much as digits as its factorization.

1005996523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143713796.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 1005996523 is about 31717.4482422530. The cubic root of 1005996523 is about 1001.9948588918.

The spelling of 1005996523 in words is "one billion, five million, nine hundred ninety-six thousand, five hundred twenty-three".