745919 has 4 divisors (see below), whose sum is σ = 749280. Its totient is φ = 742560.

The previous prime is 745903. The next prime is 745931. The reversal of 745919 is 919547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919547 = 17 ⋅54091.

It is a cyclic number.

It is not a de Polignac number, because 745919 - 2⁴ = 745903 is a prime.

It is a super-2 number, since 2×745919² = 1112790309122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745939) 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 3 ways as a sum of consecutive naturals, for example, 1322 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (187320).

2⁷⁴⁵⁹¹⁹ is an apocalyptic number.

745919 is a deficient number, since it is larger than the sum of its proper divisors (3361).

745919 is a wasteful number, since it uses less digits than its factorization.

745919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360.

The product of its digits is 11340, while the sum is 35.

The square root of 745919 is about 863.6660234141. Note that the first 3 decimals coincide. The cubic root of 745919 is about 90.6909371900.

The spelling of 745919 in words is "seven hundred forty-five thousand, nine hundred nineteen".