748534561 has 4 divisors (see below), whose sum is σ = 748612800. Its totient is φ = 748456324.

The previous prime is 748534513. The next prime is 748534597. The reversal of 748534561 is 165435847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 748534561 - 2⁷ = 748534433 is a prime.

It is a super-2 number, since 2×748534561² = 1120607978022925442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748234561) 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, 22381 + ... + 44698.

It is an arithmetic number, because the mean of its divisors is an integer number (187153200).

Almost surely, 2^748534561 is an apocalyptic number.

It is an amenable number.

748534561 is a deficient number, since it is larger than the sum of its proper divisors (78239).

748534561 is a wasteful number, since it uses less digits than its factorization.

748534561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78238.

The product of its digits is 403200, while the sum is 43.

The square root of 748534561 is about 27359.3596599043. The cubic root of 748534561 is about 907.9681596117.

The spelling of 748534561 in words is "seven hundred forty-eight million, five hundred thirty-four thousand, five hundred sixty-one".