652005778 has 16 divisors (see below), whose sum is σ = 996482520. Its totient is φ = 319890816.

The previous prime is 652005727. The next prime is 652005779. The reversal of 652005778 is 877500256.

652005778 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 4 ways, for example, as 605996689 + 46009089 = 24617^2 + 6783^2 .

It is a super-2 number, since 2×652005778² = 850223069090770568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 652005778.

It is not an unprimeable number, because it can be changed into a prime (652005779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17428 + ... + 40096.

Almost surely, 2^652005778 is an apocalyptic number.

652005778 is a deficient number, since it is larger than the sum of its proper divisors (344476742).

652005778 is a wasteful number, since it uses less digits than its factorization.

652005778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22941.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 652005778 is about 25534.4038113287. The cubic root of 652005778 is about 867.1292075026.

The spelling of 652005778 in words is "six hundred fifty-two million, five thousand, seven hundred seventy-eight".