748448861 has 4 divisors (see below), whose sum is σ = 751996224. Its totient is φ = 744901500.

The previous prime is 748448803. The next prime is 748448867. The reversal of 748448861 is 168844847.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 168844847 = 41 ⋅4118167.

It is a cyclic number.

It is not a de Polignac number, because 748448861 - 2⁶ = 748448797 is a prime.

It is a super-3 number, since 3×748448861³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748448867) 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, 1773365 + ... + 1773786.

It is an arithmetic number, because the mean of its divisors is an integer number (187999056).

Almost surely, 2^748448861 is an apocalyptic number.

It is an amenable number.

748448861 is a deficient number, since it is larger than the sum of its proper divisors (3547363).

748448861 is a wasteful number, since it uses less digits than its factorization.

748448861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547362.

The product of its digits is 1376256, while the sum is 50.

The square root of 748448861 is about 27357.7934234470. The cubic root of 748448861 is about 907.9335070853.

The spelling of 748448861 in words is "seven hundred forty-eight million, four hundred forty-eight thousand, eight hundred sixty-one".