734640545 has 4 divisors (see below), whose sum is σ = 881568660. Its totient is φ = 587712432.

The previous prime is 734640527. The next prime is 734640547. The reversal of 734640545 is 545046437.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 498003856 + 236636689 = 22316^2 + 15383^2 .

It is a cyclic number.

It is not a de Polignac number, because 734640545 - 2⁶ = 734640481 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 734640499 and 734640508.

It is not an unprimeable number, because it can be changed into a prime (734640547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73464050 + ... + 73464059.

It is an arithmetic number, because the mean of its divisors is an integer number (220392165).

Almost surely, 2^734640545 is an apocalyptic number.

It is an amenable number.

734640545 is a deficient number, since it is larger than the sum of its proper divisors (146928115).

734640545 is a wasteful number, since it uses less digits than its factorization.

734640545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146928114.

The product of its (nonzero) digits is 201600, while the sum is 38.

The square root of 734640545 is about 27104.2532640174. The cubic root of 734640545 is about 902.3152508419.

The spelling of 734640545 in words is "seven hundred thirty-four million, six hundred forty thousand, five hundred forty-five".