743986506 has 8 divisors (see below), whose sum is σ = 1487973024. Its totient is φ = 247995500.

The previous prime is 743986489. The next prime is 743986541. The reversal of 743986506 is 605689347.

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

743986506 is an admirable number.

It is a super-2 number, since 2×743986506² = 1107031842220176072, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 61998870 + ... + 61998881.

It is an arithmetic number, because the mean of its divisors is an integer number (185996628).

Almost surely, 2^743986506 is an apocalyptic number.

743986506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

743986506 is a wasteful number, since it uses less digits than its factorization.

743986506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123997756.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 743986506 is about 27276.1160358289. The cubic root of 743986506 is about 906.1255009885.

The spelling of 743986506 in words is "seven hundred forty-three million, nine hundred eighty-six thousand, five hundred six".