748690813 has 4 divisors (see below), whose sum is σ = 806282428. Its totient is φ = 691099200.

The previous prime is 748690799. The next prime is 748690849. The reversal of 748690813 is 318096847.

It is a happy number.

748690813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 318096847 = 4111 ⋅77377.

It can be written as a sum of positive squares in 2 ways, for example, as 344399364 + 404291449 = 18558^2 + 20107^2 .

It is a cyclic number.

It is not a de Polignac number, because 748690813 - 2¹³ = 748682621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748690513) 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, 28795788 + ... + 28795813.

It is an arithmetic number, because the mean of its divisors is an integer number (201570607).

Almost surely, 2^748690813 is an apocalyptic number.

It is an amenable number.

748690813 is a deficient number, since it is larger than the sum of its proper divisors (57591615).

748690813 is a wasteful number, since it uses less digits than its factorization.

748690813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57591614.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 748690813 is about 27362.2150601884. The cubic root of 748690813 is about 908.0313328117.

The spelling of 748690813 in words is "seven hundred forty-eight million, six hundred ninety thousand, eight hundred thirteen".