745471620 has 96 divisors (see below), whose sum is σ = 2351139840. Its totient is φ = 196058880.

The previous prime is 745471619. The next prime is 745471627. The reversal of 745471620 is 26174547.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (745471627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29965 + ... + 48875.

It is an arithmetic number, because the mean of its divisors is an integer number (24491040).

Almost surely, 2^745471620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745471620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1175569920).

745471620 is an abundant number, since it is smaller than the sum of its proper divisors (1605668220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745471620 is a wasteful number, since it uses less digits than its factorization.

745471620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19002 (or 18994 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 745471620 is about 27303.3261709998. The cubic root of 745471620 is about 906.7280232290.

It can be divided in two parts, 74547 and 1620, that added together give a palindrome (76167).

The spelling of 745471620 in words is "seven hundred forty-five million, four hundred seventy-one thousand, six hundred twenty".