745669685 has 8 divisors (see below), whose sum is σ = 901634976. Its totient is φ = 591981520.

The previous prime is 745669651. The next prime is 745669693. The reversal of 745669685 is 586966547.

It is a happy number.

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

It is not a de Polignac number, because 745669685 - 2¹⁴ = 745653301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745669685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568559 + ... + 569868.

It is an arithmetic number, because the mean of its divisors is an integer number (112704372).

Almost surely, 2^745669685 is an apocalyptic number.

It is an amenable number.

745669685 is a deficient number, since it is larger than the sum of its proper divisors (155965291).

745669685 is a wasteful number, since it uses less digits than its factorization.

745669685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138563.

The product of its digits is 10886400, while the sum is 56.

The square root of 745669685 is about 27306.9530522905. The cubic root of 745669685 is about 906.8083192359.

The spelling of 745669685 in words is "seven hundred forty-five million, six hundred sixty-nine thousand, six hundred eighty-five".