744301645 has 4 divisors (see below), whose sum is σ = 893161980. Its totient is φ = 595441312.

The previous prime is 744301627. The next prime is 744301673. The reversal of 744301645 is 546103447.

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 224370441 + 519931204 = 14979^2 + 22802^2 .

It is a cyclic number.

It is not a de Polignac number, because 744301645 - 2⁹ = 744301133 is a prime.

It is a super-3 number, since 3×744301645³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 744301645.

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, 74430160 + ... + 74430169.

It is an arithmetic number, because the mean of its divisors is an integer number (223290495).

Almost surely, 2^744301645 is an apocalyptic number.

It is an amenable number.

744301645 is a deficient number, since it is larger than the sum of its proper divisors (148860335).

744301645 is a wasteful number, since it uses less digits than its factorization.

744301645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148860334.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 744301645 is about 27281.8922547539. The cubic root of 744301645 is about 906.2534222939.

The spelling of 744301645 in words is "seven hundred forty-four million, three hundred one thousand, six hundred forty-five".