749757845 has 16 divisors (see below), whose sum is σ = 915334128. Its totient is φ = 589478400.

The previous prime is 749757821. The next prime is 749757859. The reversal of 749757845 is 548757947.

It can be written as a sum of positive squares in 8 ways, for example, as 9591409 + 740166436 = 3097^2 + 27206^2 .

It is a de Polignac number, because none of the positive numbers 2^k-749757845 is a prime.

It is a super-2 number, since 2×749757845² = 1124273652278088050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63767 + ... + 74603.

It is an arithmetic number, because the mean of its divisors is an integer number (57208383).

Almost surely, 2^749757845 is an apocalyptic number.

It is an amenable number.

749757845 is a deficient number, since it is larger than the sum of its proper divisors (165576283).

749757845 is a wasteful number, since it uses less digits than its factorization.

749757845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11080.

The product of its digits is 9878400, while the sum is 56.

The square root of 749757845 is about 27381.7063931377. The cubic root of 749757845 is about 908.4625025932.

The spelling of 749757845 in words is "seven hundred forty-nine million, seven hundred fifty-seven thousand, eight hundred forty-five".