749694816 has 216 divisors, whose sum is σ = 2351270376. Its totient is φ = 226437120.

The previous prime is 749694811. The next prime is 749694857. The reversal of 749694816 is 618496947.

749694816 is a `hidden beast` number, since 74 + 96 + 9 + 481 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749694811) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 3552951 + ... + 3553161.

It is an arithmetic number, because the mean of its divisors is an integer number (10885511).

Almost surely, 2^749694816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749694816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1175635188).

749694816 is an abundant number, since it is smaller than the sum of its proper divisors (1601575560).

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

749694816 is a wasteful number, since it uses less digits than its factorization.

749694816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 302 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 749694816 is about 27380.5554362946. Note that the first 3 decimals coincide. The cubic root of 749694816 is about 908.4370450013.

The spelling of 749694816 in words is "seven hundred forty-nine million, six hundred ninety-four thousand, eight hundred sixteen".