802640545 has 16 divisors (see below), whose sum is σ = 1148624640. Its totient is φ = 526451904.

The previous prime is 802640539. The next prime is 802640549. The reversal of 802640545 is 545046208.

It is a cyclic number.

It is not a de Polignac number, because 802640545 - 2⁷ = 802640417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 802640545.

It is not an unprimeable number, because it can be changed into a prime (802640549) 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 15 ways as a sum of consecutive naturals, for example, 497730 + ... + 499339.

It is an arithmetic number, because the mean of its divisors is an integer number (71789040).

Almost surely, 2^802640545 is an apocalyptic number.

It is an amenable number.

802640545 is a deficient number, since it is larger than the sum of its proper divisors (345984095).

802640545 is a wasteful number, since it uses less digits than its factorization.

802640545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997104.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 802640545 is about 28330.9114749243. The cubic root of 802640545 is about 929.3380053992.

It can be divided in two parts, 80 and 2640545, that added together give a square (2640625 = 1625²).

The spelling of 802640545 in words is "eight hundred two million, six hundred forty thousand, five hundred forty-five".