743642536 has 32 divisors (see below), whose sum is σ = 1716099840. Its totient is φ = 294187968.

The previous prime is 743642533. The next prime is 743642551. The reversal of 743642536 is 635246347.

It is a super-2 number, since 2×743642536² = 1106008442697022592, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (743642533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510016 + ... + 511471.

It is an arithmetic number, because the mean of its divisors is an integer number (53628120).

Almost surely, 2^743642536 is an apocalyptic number.

It is an amenable number.

743642536 is an abundant number, since it is smaller than the sum of its proper divisors (972457304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

743642536 is a wasteful number, since it uses less digits than its factorization.

743642536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021513 (or 1021509 counting only the distinct ones).

The product of its digits is 362880, while the sum is 40.

The square root of 743642536 is about 27269.8099736687. The cubic root of 743642536 is about 905.9858353576.

The spelling of 743642536 in words is "seven hundred forty-three million, six hundred forty-two thousand, five hundred thirty-six".