745220663 has 8 divisors (see below), whose sum is σ = 834940560. Its totient is φ = 659162880.

The previous prime is 745220629. The next prime is 745220741. The reversal of 745220663 is 366022547.

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

It is a cyclic number.

It is not a de Polignac number, because 745220663 - 2⁶ = 745220599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745220363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 915098 + ... + 915911.

It is an arithmetic number, because the mean of its divisors is an integer number (104367570).

Almost surely, 2^745220663 is an apocalyptic number.

745220663 is a deficient number, since it is larger than the sum of its proper divisors (89719897).

745220663 is a wasteful number, since it uses less digits than its factorization.

745220663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831057.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 745220663 is about 27298.7300620377. The cubic root of 745220663 is about 906.6262642542.

The spelling of 745220663 in words is "seven hundred forty-five million, two hundred twenty thousand, six hundred sixty-three".