749966553 has 16 divisors (see below), whose sum is σ = 1269784960. Its totient is φ = 428552208.

The previous prime is 749966521. The next prime is 749966597. The reversal of 749966553 is 355669947.

It is not a de Polignac number, because 749966553 - 2⁵ = 749966521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749966553.

It is not an unprimeable number, because it can be changed into a prime (749962553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983850 + ... + 1984227.

It is an arithmetic number, because the mean of its divisors is an integer number (79361560).

Almost surely, 2^749966553 is an apocalyptic number.

It is an amenable number.

749966553 is a deficient number, since it is larger than the sum of its proper divisors (519818407).

749966553 is a wasteful number, since it uses less digits than its factorization.

749966553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968093 (or 3968087 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The square root of 749966553 is about 27385.5172125706. The cubic root of 749966553 is about 908.5467901636.

The spelling of 749966553 in words is "seven hundred forty-nine million, nine hundred sixty-six thousand, five hundred fifty-three".