745669920 has 48 divisors (see below), whose sum is σ = 2348861760. Its totient is φ = 198845184.

The previous prime is 745669919. The next prime is 745669927. The reversal of 745669920 is 29966547.

745669920 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 745669920.

It is not an unprimeable number, because it can be changed into a prime (745669927) 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, 776260 + ... + 777219.

It is an arithmetic number, because the mean of its divisors is an integer number (48934620).

Almost surely, 2^745669920 is an apocalyptic number.

It is an amenable number.

745669920 is an abundant number, since it is smaller than the sum of its proper divisors (1603191840).

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

745669920 is a wasteful number, since it uses less digits than its factorization.

745669920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553497 (or 1553489 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 745669920 is about 27306.9573552236. The cubic root of 745669920 is about 906.8084144970.

The spelling of 745669920 in words is "seven hundred forty-five million, six hundred sixty-nine thousand, nine hundred twenty".