77861027 has 16 divisors (see below), whose sum is σ = 82555200. Its totient is φ = 73328640.

The previous prime is 77861023. The next prime is 77861039. The reversal of 77861027 is 72016877.

It is a cyclic number.

It is not a de Polignac number, because 77861027 - 2² = 77861023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77861023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250202 + ... + 250512.

It is an arithmetic number, because the mean of its divisors is an integer number (5159700).

Almost surely, 2^77861027 is an apocalyptic number.

77861027 is a deficient number, since it is larger than the sum of its proper divisors (4694173).

77861027 is a wasteful number, since it uses less digits than its factorization.

77861027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 77861027 is about 8823.8895618656. The cubic root of 77861027 is about 427.0119633861.

The spelling of 77861027 in words is "seventy-seven million, eight hundred sixty-one thousand, twenty-seven".