139774568 has 16 divisors (see below), whose sum is σ = 267022980. Its totient is φ = 68568448.

The previous prime is 139774543. The next prime is 139774571. The reversal of 139774568 is 865477931.

It can be written as a sum of positive squares in 2 ways, for example, as 139759684 + 14884 = 11822^2 + 122^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 164405 + ... + 165252.

Almost surely, 2^139774568 is an apocalyptic number.

It is an amenable number.

139774568 is a deficient number, since it is larger than the sum of its proper divisors (127248412).

139774568 is a wasteful number, since it uses less digits than its factorization.

139774568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329716 (or 329712 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 50.

The square root of 139774568 is about 11822.6294875548. The cubic root of 139774568 is about 518.9705570471.

The spelling of 139774568 in words is "one hundred thirty-nine million, seven hundred seventy-four thousand, five hundred sixty-eight".