749850653 has 4 divisors (see below), whose sum is σ = 753125340. Its totient is φ = 746575968.

The previous prime is 749850649. The next prime is 749850659. The reversal of 749850653 is 356058947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356058947 = 1009 ⋅352883.

It can be written as a sum of positive squares in 2 ways, for example, as 702144004 + 47706649 = 26498^2 + 6907^2 .

It is a cyclic number.

It is not a de Polignac number, because 749850653 - 2² = 749850649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749850598 and 749850607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749850659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637000 + ... + 1637457.

It is an arithmetic number, because the mean of its divisors is an integer number (188281335).

Almost surely, 2^749850653 is an apocalyptic number.

It is an amenable number.

749850653 is a deficient number, since it is larger than the sum of its proper divisors (3274687).

749850653 is a wasteful number, since it uses less digits than its factorization.

749850653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274686.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 749850653 is about 27383.4010488106. The cubic root of 749850653 is about 908.4999854106.

The spelling of 749850653 in words is "seven hundred forty-nine million, eight hundred fifty thousand, six hundred fifty-three".