3661077856 has 24 divisors (see below), whose sum is σ = 7456291920. Its totient is φ = 1767416448.

The previous prime is 3661077799. The next prime is 3661077859. The reversal of 3661077856 is 6587701663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661077859) 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 3 ways as a sum of consecutive naturals, for example, 1971636 + ... + 1973491.

It is an arithmetic number, because the mean of its divisors is an integer number (310678830).

Almost surely, 2^3661077856 is an apocalyptic number.

It is an amenable number.

3661077856 is an abundant number, since it is smaller than the sum of its proper divisors (3795214064).

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

3661077856 is a wasteful number, since it uses less digits than its factorization.

3661077856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945166 (or 3945158 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 3661077856 is about 60506.8413983080. The cubic root of 3661077856 is about 1541.2378106839.

The spelling of 3661077856 in words is "three billion, six hundred sixty-one million, seventy-seven thousand, eight hundred fifty-six".