744145646 has 4 divisors (see below), whose sum is σ = 1116218472. Its totient is φ = 372072822.

The previous prime is 744145639. The next prime is 744145651. The reversal of 744145646 is 646541447.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186036410 + ... + 186036413.

It is an arithmetic number, because the mean of its divisors is an integer number (279054618).

Almost surely, 2^744145646 is an apocalyptic number.

744145646 is a deficient number, since it is larger than the sum of its proper divisors (372072826).

744145646 is a wasteful number, since it uses less digits than its factorization.

744145646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372072825.

The product of its digits is 322560, while the sum is 41.

The square root of 744145646 is about 27279.0330840373. The cubic root of 744145646 is about 906.1901036530.

The spelling of 744145646 in words is "seven hundred forty-four million, one hundred forty-five thousand, six hundred forty-six".