745979 has 4 divisors (see below), whose sum is σ = 803376. Its totient is φ = 688584.

The previous prime is 745973. The next prime is 745981. The reversal of 745979 is 979547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979547 = 23 ⋅42589.

It is not a de Polignac number, because 745979 - 2¹² = 741883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745973) 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, 28679 + ... + 28704.

It is an arithmetic number, because the mean of its divisors is an integer number (200844).

2⁷⁴⁵⁹⁷⁹ is an apocalyptic number.

745979 is a deficient number, since it is larger than the sum of its proper divisors (57397).

745979 is a wasteful number, since it uses less digits than its factorization.

745979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57396.

The product of its digits is 79380, while the sum is 41.

The square root of 745979 is about 863.7007583648. The cubic root of 745979 is about 90.6933687812.

The spelling of 745979 in words is "seven hundred forty-five thousand, nine hundred seventy-nine".