745998336 has 144 divisors (see below), whose sum is σ = 2235870000. Its totient is φ = 248500224.

The previous prime is 745998313. The next prime is 745998359. The reversal of 745998336 is 633899547.

It is an interprime number because it is at equal distance from previous prime (745998313) and next prime (745998359).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 496915 + ... + 498413.

It is an arithmetic number, because the mean of its divisors is an integer number (15526875).

Almost surely, 2^745998336 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 745998336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117935000).

745998336 is an abundant number, since it is smaller than the sum of its proper divisors (1489871664).

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

745998336 is an equidigital number, since it uses as much as digits as its factorization.

745998336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1504 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 745998336 is about 27312.9701057941. The cubic root of 745998336 is about 906.9415237425.

The spelling of 745998336 in words is "seven hundred forty-five million, nine hundred ninety-eight thousand, three hundred thirty-six".