748749679 has 4 divisors (see below), whose sum is σ = 748819384. Its totient is φ = 748679976.

The previous prime is 748749653. The next prime is 748749697. The reversal of 748749679 is 976947847.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 976947847 = 9323 ⋅104789.

It is a cyclic number.

It is not a de Polignac number, because 748749679 - 2⁹ = 748749167 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 (748749629) 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, 14952 + ... + 41485.

It is an arithmetic number, because the mean of its divisors is an integer number (187204846).

Almost surely, 2^748749679 is an apocalyptic number.

748749679 is a deficient number, since it is larger than the sum of its proper divisors (69705).

748749679 is a wasteful number, since it uses less digits than its factorization.

748749679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69704.

The product of its digits is 21337344, while the sum is 61.

The square root of 748749679 is about 27363.2907195023. The cubic root of 748749679 is about 908.0551302505.

The spelling of 748749679 in words is "seven hundred forty-eight million, seven hundred forty-nine thousand, six hundred seventy-nine".