5642502786 has 12 divisors (see below), whose sum is σ = 12225422742. Its totient is φ = 1880834256.

The previous prime is 5642502781. The next prime is 5642502787. The reversal of 5642502786 is 6872052465.

5642502786 is a `hidden beast` number, since 5 + 64 + 2 + 502 + 7 + 86 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4207987161 + 1434515625 = 64869^2 + 37875^2 .

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 (5642502781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156736171 + ... + 156736206.

Almost surely, 2^5642502786 is an apocalyptic number.

5642502786 is an abundant number, since it is smaller than the sum of its proper divisors (6582919956).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5642502786 is a wasteful number, since it uses less digits than its factorization.

5642502786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313472385 (or 313472382 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 5642502786 is about 75116.5946113108. The cubic root of 5642502786 is about 1780.2893509752.

The spelling of 5642502786 in words is "five billion, six hundred forty-two million, five hundred two thousand, seven hundred eighty-six".