745411621 has 8 divisors (see below), whose sum is σ = 771436800. Its totient is φ = 719407920.

The previous prime is 745411609. The next prime is 745411627. The reversal of 745411621 is 126114547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745411621 - 2¹⁹ = 744887333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745411627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101760 + ... + 108838.

It is an arithmetic number, because the mean of its divisors is an integer number (96429600).

Almost surely, 2^745411621 is an apocalyptic number.

It is an amenable number.

745411621 is a deficient number, since it is larger than the sum of its proper divisors (26025179).

745411621 is a wasteful number, since it uses less digits than its factorization.

745411621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10739.

The product of its digits is 6720, while the sum is 31.

The square root of 745411621 is about 27302.2273999760. The cubic root of 745411621 is about 906.7036966896.

The spelling of 745411621 in words is "seven hundred forty-five million, four hundred eleven thousand, six hundred twenty-one".