745488641 has 8 divisors (see below), whose sum is σ = 789645024. Its totient is φ = 701366080.

The previous prime is 745488631. The next prime is 745488647. The reversal of 745488641 is 146884547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745488641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745488647) 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, 47606 + ... + 61296.

It is an arithmetic number, because the mean of its divisors is an integer number (98705628).

Almost surely, 2^745488641 is an apocalyptic number.

It is an amenable number.

745488641 is a deficient number, since it is larger than the sum of its proper divisors (44156383).

745488641 is a wasteful number, since it uses less digits than its factorization.

745488641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16911.

The product of its digits is 860160, while the sum is 47.

The square root of 745488641 is about 27303.6378711702. The cubic root of 745488641 is about 906.7349241402.

The spelling of 745488641 in words is "seven hundred forty-five million, four hundred eighty-eight thousand, six hundred forty-one".