749577313 has 4 divisors (see below), whose sum is σ = 757999620. Its totient is φ = 741155008.

The previous prime is 749577253. The next prime is 749577319. The reversal of 749577313 is 313775947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313775947 = 37 ⋅8480431.

It can be written as a sum of positive squares in 2 ways, for example, as 175112289 + 574465024 = 13233^2 + 23968^2 .

It is a cyclic number.

It is not a de Polignac number, because 749577313 - 2²¹ = 747480161 is a prime.

It is a super-2 number, since 2×749577313² = 1123732296328599938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749577319) 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, 4211020 + ... + 4211197.

It is an arithmetic number, because the mean of its divisors is an integer number (189499905).

Almost surely, 2^749577313 is an apocalyptic number.

It is an amenable number.

749577313 is a deficient number, since it is larger than the sum of its proper divisors (8422307).

749577313 is an equidigital number, since it uses as much as digits as its factorization.

749577313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422306.

The product of its digits is 555660, while the sum is 46.

The square root of 749577313 is about 27378.4096141467. The cubic root of 749577313 is about 908.3895813965.

The spelling of 749577313 in words is "seven hundred forty-nine million, five hundred seventy-seven thousand, three hundred thirteen".