749348645 has 4 divisors (see below), whose sum is σ = 899218380. Its totient is φ = 599478912.

The previous prime is 749348617. The next prime is 749348693. The reversal of 749348645 is 546843947.

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 266799556 + 482549089 = 16334^2 + 21967^2 .

It is a cyclic number.

It is not a de Polignac number, because 749348645 - 2¹⁴ = 749332261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 749348593 and 749348602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74934860 + ... + 74934869.

It is an arithmetic number, because the mean of its divisors is an integer number (224804595).

Almost surely, 2^749348645 is an apocalyptic number.

It is an amenable number.

749348645 is a deficient number, since it is larger than the sum of its proper divisors (149869735).

749348645 is a wasteful number, since it uses less digits than its factorization.

749348645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149869734.

The product of its digits is 2903040, while the sum is 50.

The square root of 749348645 is about 27374.2332312706. The cubic root of 749348645 is about 908.2972001076.

The spelling of 749348645 in words is "seven hundred forty-nine million, three hundred forty-eight thousand, six hundred forty-five".