77488061 has 12 divisors (see below), whose sum is σ = 94884480. Its totient is φ = 62921880.

The previous prime is 77488043. The next prime is 77488069. The reversal of 77488061 is 16088477.

It is not a de Polignac number, because 77488061 - 2¹⁴ = 77471677 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77488069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40685 + ... + 42546.

It is an arithmetic number, because the mean of its divisors is an integer number (7907040).

Almost surely, 2^77488061 is an apocalyptic number.

It is an amenable number.

77488061 is a deficient number, since it is larger than the sum of its proper divisors (17396419).

77488061 is a wasteful number, since it uses less digits than its factorization.

77488061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83264 (or 83257 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 77488061 is about 8802.7303150784. The cubic root of 77488061 is about 426.3290546893.

The spelling of 77488061 in words is "seventy-seven million, four hundred eighty-eight thousand, sixty-one".