745887779 has 16 divisors (see below), whose sum is σ = 920156160. Its totient is φ = 588777120.

The previous prime is 745887757. The next prime is 745887781. The reversal of 745887779 is 977788547.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 745887779 - 2¹⁶ = 745822243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745887749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30614 + ... + 49284.

It is an arithmetic number, because the mean of its divisors is an integer number (57509760).

Almost surely, 2^745887779 is an apocalyptic number.

745887779 is a deficient number, since it is larger than the sum of its proper divisors (174268381).

745887779 is a wasteful number, since it uses less digits than its factorization.

745887779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19130.

The product of its digits is 27659520, while the sum is 62.

The square root of 745887779 is about 27310.9461388653. The cubic root of 745887779 is about 906.8967185989.

The spelling of 745887779 in words is "seven hundred forty-five million, eight hundred eighty-seven thousand, seven hundred seventy-nine".