749853561 has 12 divisors (see below), whose sum is σ = 1062077552. Its totient is φ = 470495808.

The previous prime is 749853499. The next prime is 749853571. The reversal of 749853561 is 165358947.

It is not a de Polignac number, because 749853561 - 2¹⁷ = 749722489 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 749853561.

It is not an unprimeable number, because it can be changed into a prime (749853571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431575 + ... + 433308.

Almost surely, 2^749853561 is an apocalyptic number.

It is an amenable number.

749853561 is a deficient number, since it is larger than the sum of its proper divisors (312223991).

749853561 is a wasteful number, since it uses less digits than its factorization.

749853561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864920 (or 864903 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 749853561 is about 27383.4541466193. The cubic root of 749853561 is about 908.5011598287.

The spelling of 749853561 in words is "seven hundred forty-nine million, eight hundred fifty-three thousand, five hundred sixty-one".