745733590 has 64 divisors (see below), whose sum is σ = 1564904448. Its totient is φ = 250588800.

The previous prime is 745733507. The next prime is 745733591. The reversal of 745733590 is 95337547.

It is a happy number.

It is a super-2 number, since 2×745733590² = 1112237174508576200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745733591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1127860 + ... + 1128520.

It is an arithmetic number, because the mean of its divisors is an integer number (24451632).

Almost surely, 2^745733590 is an apocalyptic number.

745733590 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

745733590 is an abundant number, since it is smaller than the sum of its proper divisors (819170858).

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

745733590 is a wasteful number, since it uses less digits than its factorization.

745733590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 396900, while the sum is 43.

The square root of 745733590 is about 27308.1231504474. The cubic root of 745733590 is about 906.8342234361.

The spelling of 745733590 in words is "seven hundred forty-five million, seven hundred thirty-three thousand, five hundred ninety".