748857997 has 4 divisors (see below), whose sum is σ = 752995516. Its totient is φ = 744720480.

The previous prime is 748857961. The next prime is 748858027. The reversal of 748857997 is 799758847.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21261321 + 727596676 = 4611^2 + 26974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748857997 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 (748857937) 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, 2068488 + ... + 2068849.

It is an arithmetic number, because the mean of its divisors is an integer number (188248879).

Almost surely, 2^748857997 is an apocalyptic number.

It is an amenable number.

748857997 is a deficient number, since it is larger than the sum of its proper divisors (4137519).

748857997 is a wasteful number, since it uses less digits than its factorization.

748857997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137518.

The product of its digits is 35562240, while the sum is 64.

The square root of 748857997 is about 27365.2699054842. The cubic root of 748857997 is about 908.0989161226.

The spelling of 748857997 in words is "seven hundred forty-eight million, eight hundred fifty-seven thousand, nine hundred ninety-seven".