745678811 has 4 divisors (see below), whose sum is σ = 746705232. Its totient is φ = 744652392.

The previous prime is 745678793. The next prime is 745678831. The reversal of 745678811 is 118876547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118876547 = 1697 ⋅70051.

It is a cyclic number.

It is not a de Polignac number, because 745678811 - 2¹⁰ = 745677787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745678831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512120 + ... + 513573.

It is an arithmetic number, because the mean of its divisors is an integer number (186676308).

Almost surely, 2^745678811 is an apocalyptic number.

745678811 is a deficient number, since it is larger than the sum of its proper divisors (1026421).

745678811 is a wasteful number, since it uses less digits than its factorization.

745678811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026420.

The product of its digits is 376320, while the sum is 47.

The square root of 745678811 is about 27307.1201520776. The cubic root of 745678811 is about 906.8120185947.

The spelling of 745678811 in words is "seven hundred forty-five million, six hundred seventy-eight thousand, eight hundred eleven".