745217782 has 8 divisors (see below), whose sum is σ = 1118159496. Its totient is φ = 372497952.

The previous prime is 745217771. The next prime is 745217783. The reversal of 745217782 is 287712547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×745217782³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745217783) 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, 46803 + ... + 60670.

It is an arithmetic number, because the mean of its divisors is an integer number (139769937).

Almost surely, 2^745217782 is an apocalyptic number.

745217782 is a deficient number, since it is larger than the sum of its proper divisors (372941714).

745217782 is a wasteful number, since it uses less digits than its factorization.

745217782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110942.

The product of its digits is 219520, while the sum is 43.

The square root of 745217782 is about 27298.6772939643. The cubic root of 745217782 is about 906.6250959230.

The spelling of 745217782 in words is "seven hundred forty-five million, two hundred seventeen thousand, seven hundred eighty-two".