745661097 has 12 divisors (see below), whose sum is σ = 1082649204. Its totient is φ = 494530560.

The previous prime is 745661093. The next prime is 745661143. The reversal of 745661097 is 790166547.

It is a happy number.

745661097 is a `hidden beast` number, since 74 + 566 + 10 + 9 + 7 = 666.

745661097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 540283536 + 205377561 = 23244^2 + 14331^2 .

It is not a de Polignac number, because 745661097 - 2² = 745661093 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (745661093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212904 + ... + 216377.

It is an arithmetic number, because the mean of its divisors is an integer number (90220767).

Almost surely, 2^745661097 is an apocalyptic number.

It is an amenable number.

745661097 is a deficient number, since it is larger than the sum of its proper divisors (336988107).

745661097 is a wasteful number, since it uses less digits than its factorization.

745661097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429480 (or 429477 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 745661097 is about 27306.7958025104. The cubic root of 745661097 is about 906.8048379359.

The spelling of 745661097 in words is "seven hundred forty-five million, six hundred sixty-one thousand, ninety-seven".