745749504 has 220 divisors, whose sum is σ = 2296553864. Its totient is φ = 241864704.

The previous prime is 745749497. The next prime is 745749527. The reversal of 745749504 is 405947547.

745749504 is a `hidden beast` number, since 74 + 5 + 74 + 9 + 504 = 666.

It is a super-2 number, since 2×745749504² = 1112284645432492032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 745749504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20155374 + ... + 20155410.

Almost surely, 2^745749504 is an apocalyptic number.

745749504 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 745749504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148276932).

745749504 is an abundant number, since it is smaller than the sum of its proper divisors (1550804360).

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

745749504 is an frugal number, since it uses more digits than its factorization.

745749504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 745749504 is about 27308.4145273943. The cubic root of 745749504 is about 906.8406740226.

The spelling of 745749504 in words is "seven hundred forty-five million, seven hundred forty-nine thousand, five hundred four".