388766061 has 20 divisors (see below), whose sum is σ = 581279644. Its totient is φ = 258940800.

The previous prime is 388766057. The next prime is 388766111. The reversal of 388766061 is 160667883.

388766061 is a `hidden beast` number, since 38 + 8 + 7 + 6 + 606 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 253764900 + 135001161 = 15930^2 + 11619^2 .

It is not a de Polignac number, because 388766061 - 2² = 388766057 is a prime.

It is a super-2 number, since 2×388766061² = 302278100370911442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388765998 and 388766016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388766561) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 173931 + ... + 176151.

Almost surely, 2^388766061 is an apocalyptic number.

It is an amenable number.

388766061 is a deficient number, since it is larger than the sum of its proper divisors (192513583).

388766061 is a wasteful number, since it uses less digits than its factorization.

388766061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 388766061 is about 19717.1514423357. The cubic root of 388766061 is about 729.8430018289.

The spelling of 388766061 in words is "three hundred eighty-eight million, seven hundred sixty-six thousand, sixty-one".